CN108359482A - In the method for directly liquefying coal into oil residue used coking - Google Patents
In the method for directly liquefying coal into oil residue used coking Download PDFInfo
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- CN108359482A CN108359482A CN201810103523.7A CN201810103523A CN108359482A CN 108359482 A CN108359482 A CN 108359482A CN 201810103523 A CN201810103523 A CN 201810103523A CN 108359482 A CN108359482 A CN 108359482A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/045—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing mineral oils, bitumen, tar or the like or mixtures thereof
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- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The present invention provides a kind of methods with directly liquefying coal into oil residue used coking.This approach includes the following steps：S1 will mix with the raw material of low-order coal including directly liquefying coal into oil residue used, obtain raw mixture；S2 carries out coking to raw mixture, obtains coking product.Since not only cost is relatively low for directly liquefying coal into oil residue used, and caking index is up to 90 or more, refining directly liquefying coal into oil residue used is thus mixed in process of coking can play the role of substituting coking coal, and low-order coal has the characteristic of low ash and low-sulfur, the shortcomings that so as to make up directly liquefying coal into oil residue used, by using the blending of low-order coal and directly liquefying coal into oil residue used as high-temperature coking raw material, the advantage of two kinds of raw materials can be played simultaneously, it realizes and has complementary advantages, and then coking cost is greatly reduced while ensureing coking effect.
Description
Technical field
The present invention relates to coking technology fields, in particular to a kind of method with directly liquefying coal into oil residue used coking.
Background technology
Coke is made by a variety of coals through high-temperature coking, is mainly used for the air blast of the non-ferrous metals such as blast furnace ironmaking and copper, lead, zinc
Stove is smelted, and reducing agent, exothermic mixture and stock column skeleton are played.
Using coking coal as primary raw material, mill coal can be incorporated on a small quantity to be referred to traditional coke production for adjusting coke
It marks, reduce cost, mill coal amount of allocating is usually no more than 30%.The a large amount of of coking coal use so that coking cost is high.
Therefore, the technical issues of how research reduces coking cost, is current urgent need to resolve.
Invention content
The main purpose of the present invention is to provide a kind of methods with directly liquefying coal into oil residue used coking, to solve the prior art
The middle higher problem of coking cost.
To achieve the goals above, according to an aspect of the invention, there is provided one kind is with directly liquefying coal into oil residue used coking
Method, include the following steps：S1 will mix with the raw material of low-order coal including directly liquefying coal into oil residue used, obtain raw mixture；
S2 carries out coking to raw mixture, obtains coking product.
Further, in step sl, by directly liquefying coal into oil residue used and low-order coal according to 2~5:17 mass ratio mixing.
Further, the mass fraction of sulphur is less than 0.5% in low-order coal, and the mass fraction of ash content is less than 6% in low-order coal.
Further, the viscosity index (VI) of low-order coal is less than 10.
Further, the grain size of low-order coal is less than 3mm.
Further, the grain size of directly liquefying coal into oil residue used is less than 3mm.
Further, the mode for coking being carried out to raw mixture is tamping coking.
Further, during tamping coking, coking time be 20~for 24 hours, coking temperature be 1000~1200h.
Further, in step s 2, raw mixture is passed through in coke oven and carries out coking, obtained coking product packet
Coke, burnt oil and gas are included, step S2 further includes：Part coal gas is passed through in coke oven and carries out coking with raw mixture.
Further, the 40wt% of coal gas in coking product is passed through in coke oven.
It applies the technical scheme of the present invention, provides a kind of method with directly liquefying coal into oil residue used coking, in this method first
It will be mixed with the raw material of low-order coal including directly liquefying coal into oil residue used, raw mixture obtained, then again to the raw mixture
Coking is carried out, coking product is obtained, since not only cost is relatively low for directly liquefying coal into oil residue used, but also caking index is up to 90 or more,
Refining directly liquefying coal into oil residue used is thus mixed in process of coking can play the role of substituting coking coal, and low-order coal is with low grey and low
The characteristic of sulphur, the shortcomings that so as to make up directly liquefying coal into oil residue used, by using mixing for low-order coal and directly liquefying coal into oil residue used
Mix up for high-temperature coking raw material, the advantage of two kinds of raw materials can be played simultaneously, realize and have complementary advantages, and then is ensureing coking effect
While greatly reduce coking cost.
Other than objects, features and advantages described above, the present invention also has other objects, features and advantages.
The present invention is further detailed explanation below.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.Below in conjunction with embodiment, the present invention will be described in detail.
In order to enable those skilled in the art to better understand the solution of the present invention, right below in conjunction with the embodiment of the present invention
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention one
Partial embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
The every other embodiment obtained under the premise of creative work is made, the scope of protection of the invention should be all belonged to.
It should be noted that the term " first ", " second " etc. in description and claims of this specification are to be used for
Similar object is distinguished, without being used to describe specific sequence or precedence.It should be appreciated that the data used in this way are suitable
It can be interchanged in the case of, so as to the embodiment of the present invention described herein.In addition, term " comprising " and " having " and they
Any deformation, it is intended that cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, being
System, product or equipment those of are not necessarily limited to clearly to list step or unit, but may include not listing clearly or
For the intrinsic other steps of these processes, method, product or equipment or unit.
By background technology it is found that traditional coke production is using coking coal as primary raw material, mill coal can match on a small quantity
Enter for adjusting coke index, reducing cost, mill coal amount of allocating is usually no more than 30%.The a large amount of of coking coal use so that refining
Burnt cost is high.The present inventor studies regarding to the issue above, provides one kind with directly liquefying coal into oil residue used
The method of coking, includes the following steps：S1 will be mixed including directly liquefying coal into oil residue used with the raw material of low-order coal, and it is mixed to obtain raw material
Close object；S2 carries out coking to raw mixture, obtains coking product.
Due to will first be mixed with the raw material of low-order coal including directly liquefying coal into oil residue used in above-mentioned preparation method, it is mixed to obtain raw material
Object is closed, coking then is carried out to raw mixture again, obtains coking product, since not only cost is relatively low for directly liquefying coal into oil residue used,
And caking index is up to 90 or more, thus mix in process of coking refining directly liquefying coal into oil residue used and can play the work for substituting coking coal
With, and low-order coal has the characteristic of low ash and low-sulfur, the shortcomings that so as to make up directly liquefying coal into oil residue used, by using low order
The blending of coal and directly liquefying coal into oil residue used can play the advantage of two kinds of raw materials simultaneously as high-temperature coking raw material, realize advantage
Complementation, and then greatly reduce coking cost while ensureing coking effect.
The illustrative embodiments of the preparation method according to white oil product provided by the invention are described in more detail below.
However, these illustrative embodiments can be implemented by many different forms, and it should not be construed to be limited solely to this
In the embodiment that is illustrated.It should be understood that these embodiments are provided so that disclosure herein thoroughly and
Completely, and by the design of these illustrative embodiments those of ordinary skill in the art are fully conveyed to.
First, step S1 is executed：It will be mixed with the raw material of low-order coal including directly liquefying coal into oil residue used, obtain raw material mixing
Object.In above-mentioned steps S1, in order to improve coke yield, it is preferable that by directly liquefying coal into oil residue used and low-order coal according to 2~5:17
Mass ratio mixing.By accurately controlling material rate and mixed effect, it can ensure that low-order coal can be in height in process of coking
Abundant coking under the cementation of viscous directly liquefying coal into oil residue used.
Also, directly liquefying coal into oil residue used has the characteristic of high caking property and easy high temperature pyrolysis oil-producing, aerogenesis, this is it
Advantage as coking raw material.However contain a large amount of unconverted coal and DCL/Direct coal liquefaction removal in directly liquefying coal into oil residue used simultaneously
Catalyst, thus have the characteristics that high-sulfur, high-ash, sulfur content generally in 2% (mass fraction) left and right, ash content be up to 15% with
Upper (mass fraction), far above traditional coking raw material.Element sulphur contained in raw material and ash content are most in process of coking
It can be transferred in coke, influence coking coal quality, directly liquefying coal into oil residue used is also fairly obvious as coking raw material disadvantage.In order to more preferable
Realize the mutual supplement with each other's advantages between directly liquefying coal into oil residue used and low-order coal in ground, it is preferable that the mass fraction of sulphur is less than in low-order coal
0.5%, the mass fraction of ash content is less than 6% in low-order coal.It is further preferable that the viscosity index (VI) of above-mentioned low-order coal is less than 10.It is logical
The cost of material of directly liquefying coal into oil residue used coking can be substantially reduced using the low-order coal of low viscosity by crossing.
Above-mentioned low-order coal can be Shenmu Coal, and Shenmu Coal has the characteristics that low viscous, low ash, low-sulfur, can by washing deliming
The quality raw materials of semi-coke are produced as middle coalite tar, but because its caking index is relatively low, be not suitable for producing as high-temperature coking
The raw material of coke can play two kinds of raw materials simultaneously using its blending with directly liquefying coal into oil residue used as high-temperature coking raw material
Advantage realizes and has complementary advantages that reducing high-temperature coking as-fired coal cost while widening directly liquefying coal into oil residue used application field increases
Downstream chemical products income.Since Shenmu Coal coal ash is generally in 8~12% (mass fractions) left and right, ash content is higher, therefore
Washing deliming, de- spoil need to be carried out, reduces ash content in coal, after clean fine coal is made by washing, Shenmu Coal ash content can be down to 5%
(mass fraction) hereinafter, can as with directly liquefying coal into oil residue used mixed coking raw material.
In above-mentioned preferred embodiment, in order to improve the coke output in coking product, it is preferable that the grain of low-order coal
Diameter is less than 3mm；And, it is preferable that the grain size of directly liquefying coal into oil residue used is less than 3mm.
After executing the step S1, step S2 is executed：Coking is carried out to raw mixture, obtains coking product.Ability
Field technique personnel can reasonably select the technique of above-mentioned coking according to the prior art, in order to improve the coke in coking product
Carbon yield, it is preferable that the mode that coking is carried out to raw mixture is tamping coking.It is further preferable that in above-mentioned tamping coking
During, coking time be 20~for 24 hours, coking temperature be 1000~1200h.
In above-mentioned steps S2, raw mixture is passed through in coke oven and carries out coking, obtained coking product includes coke
Charcoal, burnt oil and gas, at this time, it is preferable that above-mentioned steps S2 further includes：Part coal gas is passed through in coke oven and raw mixture
Carry out coking.Further carry out coking by leading to 40% coal gas in freshening coke oven, can while improving coke yield,
It is effectively reduced coking cost.
Below in conjunction with embodiment and comparative example further illustrate the present invention offer with directly liquefying coal into oil residue used coking
Method.
Embodiment 1
Method provided in this embodiment with directly liquefying coal into oil residue used coking includes the following steps：
By directly liquefying coal into oil residue used and low-order coal according to 2:17 mass ratio mixing, obtains raw mixture, wherein low order
The grain size of coal and directly liquefying coal into oil residue used is all higher than equal to 3mm；
Above-mentioned raw materials mixture is passed through in coke oven and carries out tamping coking, coking time 18h, coking temperature is
950h obtains coking product.
Embodiment 2
Method provided in this embodiment with directly liquefying coal into oil residue used coking includes the following steps：
By directly liquefying coal into oil residue used and low-order coal according to 5:17 mass ratio mixing, obtains raw mixture, wherein low order
The grain size of coal and directly liquefying coal into oil residue used is all higher than equal to 3mm；
Above-mentioned raw materials mixture is passed through in coke oven and carries out tamping coking, coking time 18h, coking temperature is
950h obtains coking product.
Embodiment 3
Method provided in this embodiment with directly liquefying coal into oil residue used coking includes the following steps：
By directly liquefying coal into oil residue used and low-order coal according to 5:17 mass ratio mixing, obtains raw mixture, wherein low order
The grain size of coal and directly liquefying coal into oil residue used is respectively less than 3mm；
Above-mentioned raw materials mixture is passed through in coke oven and carries out tamping coking, coking time 20h, coking temperature is
1200h obtains coking product.
Embodiment 4
Method provided in this embodiment with directly liquefying coal into oil residue used coking includes the following steps：
By directly liquefying coal into oil residue used and low-order coal according to 5:17 mass ratio mixing, obtains raw mixture, wherein low order
The grain size of coal and directly liquefying coal into oil residue used is respectively less than 3mm；
Above-mentioned raw materials mixture is passed through in coke oven and carries out tamping coking, coking time is for 24 hours that coking temperature is
1000h obtains coking product.
Embodiment 5
Method provided in this embodiment with directly liquefying coal into oil residue used coking includes the following steps：
By directly liquefying coal into oil residue used and low-order coal according to 4:17 mass ratio mixing, obtains raw mixture, wherein low order
The grain size of coal and directly liquefying coal into oil residue used is respectively less than 3mm；
Above-mentioned raw materials mixture is passed through in coke oven and carries out tamping coking, coking time 22h, coking temperature is
1100h obtains coking product, and in coking product 40% coal gas is led in freshening coke oven and continues coking.
The performance of the directly liquefying coal into oil residue used used in above-described embodiment 1 to 5 is as shown in table 1.
Table 1
The low-order coal used in above-described embodiment 1 to 5 is Shenmu Coal raw coal clean fine coal made of washing, and performance is such as
Shown in table 2.
Table 2
Coking is carried out using the preparation method in above-described embodiment 1 to 5, creation data is as shown in table 3.
Table 3
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Coke yield (As-received), % | 64.46 | 64.98 | 66.14 | 66.31 | 66.72 |
| Tar yield (As-received), % | 6.67 | 6.84 | 6.32 | 6.24 | 6.12 |
| Total water yield (As-received), % | 15.95 | 15.42 | 15.18 | 14.64 | 15.14 |
| Gas yield (As-received), % | 12.92 | 12.76 | 12.36 | 12.18 | 12.04 |
| It is total, % | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
It is counted from creation data it can be seen that using Shenmu County's clean fine coal and directly liquefying coal into oil residue used mixed coking, can be generated
A large amount of coal gas and tar product provide a large amount of raw material economics considerable benefit for the production of follow-up chemical products.
The quality of coke to being obtained in above-described embodiment 1 to 5 is detected, and testing result is as shown in table 4.
Table 4
| Coke | Ash content/% | Sulfur content/% | Volatile matter/% | Fixed carbon content/% |
| Embodiment 1 | 9.8 | 0.75 | 2.31 | 87.14 |
| Embodiment 2 | 9.5 | 0.78 | 2.29 | 87.43 |
| Embodiment 3 | 9.4 | 0.74 | 2.28 | 88.08 |
| Embodiment 4 | 9.2 | 0.82 | 2.33 | 87.65 |
| Embodiment 5 | 9.1 | 0.81 | 2.28 | 88.81 |
The quality of tar to being obtained in above-described embodiment 1 to 5 is detected, and testing result is as shown in table 5.
Table 5
| Tar | Ash content/% | Naphthalene/% | Moisture/% | Toluene insolubles/% | Density |
| Embodiment 1 | 0.25 | 10.37 | 10.2 | 12.15 | 1.11 |
| Embodiment 2 | 0.23 | 10.32 | 10.1 | 12.16 | 1.13 |
| Embodiment 3 | 0.22 | 10.36 | 9.8 | 12.18 | 1.13 |
| Embodiment 4 | 0.26 | 10.38 | 9.7 | 12.19 | 1.14 |
| Embodiment 5 | 0.25 | 10.37 | 9.9 | 12.14 | 1.12 |
The quality of coal gas to being obtained in above-described embodiment 1 to 5 is detected, and testing result is as shown in table 6.
Table 6
| Coal gas | H2/ % | CO/% | CH4/ % | N2/ % | O2/ % | Hydro carbons/% |
| Embodiment 1 | 54.9 | 15.97 | 15.27 | 6.02 | 0.76 | 1.4 |
| Embodiment 2 | 54.8 | 14.98 | 15.31 | 5.99 | 0.75 | 1.6 |
| Embodiment 3 | 54.6 | 15.01 | 15.31 | 6.01 | 0.78 | 1.5 |
| Embodiment 4 | 54.4 | 15.02 | 15.33 | 6.02 | 0.77 | 1.4 |
| Embodiment 5 | 54.5 | 15.04 | 15.33 | 6.01 | 0.78 | 1.5 |
Table 4 to table 6 is coke chemicals quality index.In terms of data achieved above, the coke ash produced is low, after being crushed
Char particle can be used as the special coke of calcium carbide, and coke powder can be used as blowing material to sell；Tar product yield is high, naphthalene content is high；Coal gas product
Although methane content decreases, CO contents increase, supply effective carbon amounts of methanol production substantially with conventional coke gas
Quite, it disclosure satisfy that the production of methanol.In addition, the present invention realizes the harmless treatment to coal direct liquefaction oil slag, big
At a temperature of 1000 DEG C, more phenyl ring substances in the dregs of fat can crack fully, polycondensation, and coal is co-melting generates graphited coke
Charcoal, the liquid volatilized, gaseous products are recycled by the change Product Collection System of coke-oven plant, fully meet the innoxious of the dregs of fat
Processing.
Economic analysis, as-fired coal cost such as 7 institute of table are carried out to the coking product being prepared using above-described embodiment 5
Show.
Table 7
| Title | Proportioning/% | Unit price/member (contains tax) | Unit price/member (is free of tax) |
| The dregs of fat | 15 | 240 | 208.8 |
| Shenmu County's clean fine coal | 85 | 450 | 391.5 |
| It is total | 100 | 418.5 | 364.1 |
Coking product is as shown in table 8 as the price of product.
Table 8
| Title | Yield/% (with coke ratio) | Unit price/member (contains tax) | Sale/member (is free of tax) |
| Char particle | 80 | 600 | 398.4 |
| Coke powder | 20 | 450 | 74.7 |
| Tar | 10.6 | 1450 | 133.72 |
| Benzene | 0.8 | 4000 | 26.56 |
| Coal gas | 617*0.6 | 0.351 | 111.06 |
| It is total | / | / | 744.44 |
It is found that coke ratio is 1.52 from table 7 and 8；
The burnt cost of material of ton is 364.1 × 1.52=553.4 members；
The burnt product sales revenue of ton is 744.44 yuan；
Then ton coke can generate value 638.86-553.4=191.04 members.
Coke is produced, it can be achieved that ton product income 191.04 as high temperature coke oven raw material using directly liquefying coal into oil residue used and Shenmu Coal
First (in terms of coke), remarkable in economical benefits.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
1, two can be played simultaneously as high-temperature coking raw material by using the blending of low-order coal and directly liquefying coal into oil residue used
The advantage of kind raw material, realizes and has complementary advantages, and then greatly reduce coking cost while ensureing coking effect；
2, the present invention realizes the harmless treatment to coal direct liquefaction oil slag, at a temperature of more than 1000 DEG C, oil
More phenyl ring substances in slag can crack fully, polycondensation, and coal is co-melting generates graphited coke, the liquid volatilized, gaseous state
Product is recycled by the change Product Collection System of coke-oven plant, fullys meet the harmless treatment of the dregs of fat；
3, coking is further carried out by leading to 40% coal gas in freshening coke oven, the same of coke yield can be being improved
When, it further reduced coking cost.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method with directly liquefying coal into oil residue used coking, which is characterized in that include the following steps：
S1 will mix with the raw material of low-order coal including directly liquefying coal into oil residue used, obtain raw mixture；
S2 carries out coking to the raw mixture, obtains coking product.
2. according to the method described in claim 1, it is characterized in that, in the step S1, by the directly liquefying coal into oil residue used
With the low-order coal according to 2~5:17 mass ratio mixing.
3. according to the method described in claim 1, it is characterized in that, in the low-order coal sulphur mass fraction be less than 0.5%, institute
The mass fraction for stating ash content in low-order coal is less than 6%.
4. according to the method described in claim 3, it is characterized in that, the viscosity index (VI) of the low-order coal is less than 10.
5. according to the method described in claim 3, it is characterized in that, the grain size of the low-order coal is less than 3mm.
6. according to the method described in claim 5, it is characterized in that, the grain size of the directly liquefying coal into oil residue used is less than 3mm.
7. according to the method described in claim 1, it is characterized in that, the mode for carrying out coking to the raw mixture is to make firm by ramming
Coking.
8. the method according to the description of claim 7 is characterized in that during the tamping coking, coking time 20
~for 24 hours, coking temperature is 1000~1200h.
9. according to the method described in claim 1, it is characterized in that, in the step S2, the raw mixture is passed through
Coking is carried out in coke oven, the obtained coking product includes coke, burnt oil and gas, and the step S2 further includes：
The part coal gas is passed through in the coke oven and carries out coking with the raw mixture.
10. according to the method described in claim 9, it is characterized in that, the 40wt% of coal gas described in the coking product is led to
Enter in the coke oven.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04309594A (en) * | 1991-04-08 | 1992-11-02 | Nippon Steel Corp | Production of blast furnace coke |
| CN103436280A (en) * | 2013-09-11 | 2013-12-11 | 神华集团有限责任公司 | Method for preparing coke by using direct coal-liquefied residue |
| CN106635217A (en) * | 2016-12-02 | 2017-05-10 | 北京神雾环境能源科技集团股份有限公司 | Formed coke and preparation method thereof |
| CN107189800A (en) * | 2017-07-03 | 2017-09-22 | 内蒙古广纳煤业（集团）有限责任公司 | A kind of coking process and products thereof and application |
-
2018
- 2018-02-01 CN CN201810103523.7A patent/CN108359482A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04309594A (en) * | 1991-04-08 | 1992-11-02 | Nippon Steel Corp | Production of blast furnace coke |
| CN103436280A (en) * | 2013-09-11 | 2013-12-11 | 神华集团有限责任公司 | Method for preparing coke by using direct coal-liquefied residue |
| CN106635217A (en) * | 2016-12-02 | 2017-05-10 | 北京神雾环境能源科技集团股份有限公司 | Formed coke and preparation method thereof |
| CN107189800A (en) * | 2017-07-03 | 2017-09-22 | 内蒙古广纳煤业（集团）有限责任公司 | A kind of coking process and products thereof and application |
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Application publication date: 20180803 |