CN106190209A - A kind of predict that mixed coal smelts the method for sulphur content in coke - Google Patents
A kind of predict that mixed coal smelts the method for sulphur content in coke Download PDFInfo
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- CN106190209A CN106190209A CN201610533692.5A CN201610533692A CN106190209A CN 106190209 A CN106190209 A CN 106190209A CN 201610533692 A CN201610533692 A CN 201610533692A CN 106190209 A CN106190209 A CN 106190209A
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- coal
- coke
- sulphur content
- coking
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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
Abstract
The invention provides and a kind of predict that mixed coal smelts the method for sulphur content in coke, described method use the sulphur content of single grade coal and single grade coal sulphur content transformation ratio, complete burnt rate and the adapted ratio in mixed coal in process of coking be parameter to predict that mixed coal smelts sulphur content in coke, described mixed coal is smelted the prediction computational methods of sulphur content in coke and is:
Description
Technical field
The present invention relates to mixed coal coking technology field, be specifically related to a kind of predict that mixed coal smelts the side of sulphur content in coke
Method.
Background technology
Coke is one of raw material of blast furnace process, coke be with coking coal through being dried, be pyrolyzed, melt, bond, solidify,
The stages such as contraction are smelt, i.e. high-temperature coking (high-temperature retorting).The coke obtained by high-temperature coking for blast furnace process, casting and
Gasification.The performance indications of coke affect blast furnace operating, and wherein sulfur content in coke often raises 0.1 percentage point, and blast furnace fuel is than increasing
Add 1.5%～2%.Therefore, one of strict Con trolling index during sulfur content in coke is blast furnace ironmaking process.
In order to accurately control sulphur content in coke, it is necessary to mixed coal smelts sulfur in coke to have correlation method accurately to predict
Point.In coal, sulphur content exists with the variform such as inorganic sulfur, organic sulfur, and in process of coking, a part of sulfur is in a gaseous form with waste coal
Gas is discharged, and in remainder residual coke.The sulphur content of mixed coal and volatilization is typically utilized to grade to predict sulfur content in coke at present,
And the multiple single grade coal forming this mixed coal is all processed by identical sulphur content transformation ratio.But due to different single grade coal
The transformation ratio of its sulphur content incomplete same in process of coking, and mixed coal is mixed by multiple single grade coal, when joining
When coal scheme changes, in mixed coal, the transformation ratio of sulfur is it can also happen that change.Therefore, at the most conventional prediction sulfur content in coke
Method in different single grade coal use same sulphur content transformation ratio, may cause predicts the outcome there is deviation.
Summary of the invention
For the problems referred to above of the prior art, offer one prediction mixed coal is provided and smelts Jiao
In charcoal, the method for sulphur content, predicts sulfur content in coke by the inventive method, it was predicted that precision has had large increase.
In order to achieve the above object, the present invention adopts the following technical scheme that a kind of prediction mixed coal smelts sulphur content in coke
Method, described method includes:
Being carried out by coking single grade coal i broken and mix, sample analysis draws the sulphur content of coking single grade coal i；
Regulate the moisture of described coking single grade coal i；
Take described coking single grade coal i and carry out coking test, it is thus achieved that the quality of described coking single grade coal i；
The coke cooling that will obtain after described coking test, it is thus achieved that the quality of described coke；
Detection show that single grade coal i smelts the sulphur content of described coke；
Calculate single grade coal sulphur content transformation ratio and complete burnt rate in process of coking；
In prediction Coal Blending Schemes, mixed coal smelts sulphur content in coke；Described mixed coal is smelted the prediction of sulphur content in coke and is calculated
Method is::
In formula:
StJoin Jiao: mixed coal smelts the sulphur content predictive value of coke, %；
StSingle coal i: the sulphur content of single grade coal i, %；
Ki: the complete burnt rate of single grade coal i coking, %；
Xi: single grade coal i quality adapted ratio in mixed coal, %；
Yi: the sulphur content transformation ratio of single grade coal i；
A: correction value, for revising the error between coking test and big coke oven production；
Described i is 1 to n.
As the most preferably, the sulphur content transformation ratio of described single grade coal i is: Yi=StSingle burnt i/StSingle coal i, wherein, described
StSingle burnt iThe sulphur content of coke, described St is smelted for single grade coal i after coking testSingle coal iSulphur content for single grade coal i.
As the most preferred, described StSingle coal iSingle grade coal before being analyzed coking test by infrared spectrometry detection draws,
Described StSingle burnt iAfter being analyzed coking test by infrared spectrometry detection, gained single grade coal coke or cinder draw.
As the most preferably, the complete burnt rate of described single grade coal i coking is Ki=mBurnt/mCoal, wherein, described mBurntFor coking
Gained coke or the quality of cinder after test；Described mCoalFor the quality of coking single grade coal i before coking test.
As the most preferably, described coking test is crucible coke test or small coke oven coking test.
As the most preferably, described small coke oven coking test is feather weight or hundred feather weight.
As the most preferably, the method for described small coke oven coking test includes: is carried out by coking coal broken and mixes,
Described coking coal regulation moisture is placed in small coke oven burner hearth, starts heating schedule and start coking, high-temperature retorting, treat that coke becomes
Stop coking test after ripe, coke is taken out in burner hearth and carries out quenching, after coke is down to room temperature, carries out detection analyzes.
As the most preferably, with the sulphur content of single grade coal, sulphur content transformation ratio, complete burnt rate and list in many group Coal Blending Schemes
Planting coal adapted ratio in mixed coal is parameter, it was predicted that go out the sulphur content St organizing coke moreJoin Jiao, big coke oven is raw with actual production
In the coke produced, sulphur content carries out contrast and obtains difference, and the meansigma methods of described difference is correction value a.
As the most preferably, described correction value a is-0.02～0.02.
The invention has the beneficial effects as follows:
(1) the inventive method is based on coking test result, turns with sulphur content, single grade coal sulphur content in process of coking of single grade coal
Change coefficient and complete burnt rate and single grade coal adapted ratio in mixed coal etc., as a parameter to prediction sulfur content in coke, take into full account
The different single grade coal diversityes after smelting coke, overcome empirical equation turning the sulphur content of different coals in prior art
Change the coefficient shortcoming that is defined as the fixed value on certain interval, it was predicted that precision is greatly improved, it was predicted that model has and is generally suitable for
Property, do not cause precision of prediction to reduce because Coal Blending Schemes variation is too big.
(2) present invention uses big coke oven creation data to carry out predicting the outcome based on small coke oven coking test data
Revise, eliminate the problem that the precision of prediction caused due to the small coke oven deviation that big coke oven exists with commercial production reduces.
(3) when not having condition to carry out small coke oven coking test, the present invention can predict based on carrying out crucible coke test,
Use more flexible.
Detailed description of the invention
For the problem that the method precision predicting sulfur content in coke in prior art is inaccurate, the invention provides one and be measured in advance
Closing coal and smelt the method for sulphur content in coke, described method is based on coking test result, and with the sulphur content of single grade coal, it is at process of coking
Middle sulphur content transformation ratio and complete burnt rate, adapted ratio in mixed coal etc. are as a parameter to prediction sulfur content in coke, it was predicted that precision
It is greatly improved, and forecast model has general applicability, do not cause precision of prediction to reduce because Coal Blending Schemes variation is too big.
Embodiment of the present invention prediction mixed coal smelts the method for sulphur content in coke, and sulphur content and single grade coal with single grade coal are in refining
During Jiao, sulphur content transformation ratio, complete burnt rate and the adapted ratio in mixed coal are as a parameter to prediction sulfur content in coke, described
Mixed coal smelts the sulphur content prediction computational methods of coke:
In formula:
StJoin Jiao: mixed coal smelts the sulphur content predictive value of coke, %；
StSingle coal i: the sulphur content of single grade coal i, %；
Ki: the complete burnt rate of single grade coal i coking, %；
Xi: single grade coal i quality adapted ratio in mixed coal, %；
Yi: the sulphur content transformation ratio of single grade coal i；
A: correction value, for revising the error between coking test and big coke oven production.
The sulphur content transformation ratio of coal: Yi=StSingle burnt i/StSingle coal i
=(mBurnt*StSingle burnt i)/(mBurnt*StSingle coal i)
=(mBurnt*StSingle burnt i)/(Ki*mCoal*StSingle coal i)
=(mBurnt*StSingle burnt i)/[Ki*(mCoal*StSingle coal i)]
=mBurnt,Sulfur/(Ki*mCoal,Sulfur)
Therefore mBurnt,Sulfur=Yi*Ki*mCoal,Sulfur
Mass conservation law according to element sulphur:
mJoin Jiao,Sulfur=mBurnt 1,Sulfur+……+mBurnt n,Sulfur(by mBurnt,Sulfur=Yi*Ki*mCoal,SulfurSubstitute into)
mJoin Jiao,Sulfur=Y1*K1*mCoal 1,Sulfur+……+Yn*Kn*mCoal n,Sulfur
Left and right substitutes into m respectivelyJoin Jiao,Sulfur=mJoin Jiao*StJoin Jiao, mBurnt i,Sulfur=StSingle coal i*mCoal i, can obtain
mJoin Jiao*StJoin Jiao=Y1*K1*StSingle coal 1*mCoal 1+……+Yn*Kn*StSingle coal n*mCoal n
mJoin Jiao*StJoin Jiao=Y1*K1*StSingle coal 1*X1*mCoal blending+……+Yn*Kn*StSingle coal n*Xn*mCoal blending
StJoin Jiao=Y1*K1*StSingle coal 1*X1*mCoal blending/mJoin Jiao+……+Yn*Kn*StSingle coal n*Xn*mCoal blending/mJoin Jiao
StJoin Jiao=(Y1*K1*StSingle coal 1*X1+……+Yn*Kn*StSingle coal n*Xn)/(mJoin Jiao/mCoal blending)
Due to
mJoin Jiao/mCoal blending
=(mBurnt 1+……+mBurnt n)/mCoal blending
=(K1*mCoal 1+……+Kn*mCoal n)/mCoal blending
=(K1*X1*mCoal blending+……+Kn*Xn*mCoal blending)/mCoal blending
=K1*X1+……+Kn*Xn
Therefore
StJoin Jiao=(Y1*K1*STd, coal 1*X1+……+Yn*Kn*STd, coal n*Xn)/(K1*X1+……+Kn*Xn)。
In formula, mBurnt、mCoalIt is respectively coke, the quality of coal.
mBurnt,Sulfur、mCoal,SulfurIt is respectively the quality of sulfur in coke, coal.
In order to be better understood from technique scheme, below in conjunction with specific embodiment, technique scheme is done in detail
Thin explanation.
Embodiment 1
In big coke oven produces, the embodiment of the present invention 1 predicts that mixed coal smelts the method for sulphur content in coke, with single grade coal
Sulphur content and single grade coal in process of coking sulphur content transformation ratio, complete burnt rate and the adapted ratio in mixed coal as a parameter to pre-
Surveying sulfur content in coke, described mixed coal is smelted the sulphur content prediction computational methods of coke and is:
In formula:
StJoin Jiao: mixed coal smelts the sulphur content predictive value of coke, %；
StSingle coal i: the sulphur content of single grade coal i, %；
Ki: the complete burnt rate of single grade coal i coking, %；
Xi: single grade coal i quality adapted ratio in mixed coal, %；
Yi: the sulphur content transformation ratio of single grade coal i；
A: correction value, for revising the error between coking test and big coke oven production.
Wherein, the sulphur content transformation ratio of described single grade coal i is:
Yi=StSingle burnt i/StSingle coal i, wherein, StSingle burnt iThe sulphur content of coke, St is smelted for single grade coal i in coking testSingle coal iFor single
The sulphur content of coal i.
Described StSingle coal i、StSingle burnt iAccording to GB (GB/T 25214-2010) " full content of Sulphur in coal mensuration infrared spectrometry " detection point
Analysis draws.
Complete burnt rate K of single grade coal i cokingi=mBurnt/mCoal, wherein, described mBurntFor gained coke after coking test or cinder
Quality, kg；Described mCoalFor the quality of coking single grade coal i, kg before coking test.
Coking test is small coke oven coking test.
As a example by one group of Coal Blending Schemes of 7.63m commercial coke oven, calculated by said method, it was predicted that mixed coal is smelted
The sulphur content (measured value is 0.72%) of coke.
First carry out coking test, calculate the complete burnt rate (K of all single grade coali) and sulphur content transformation ratio (Yi).Coking test
Use 300kg small coke oven coking test, method particularly includes: being carried out by coking coal broken and mix, sulphur content in coal is done in sampling after a while
(StSingle coal i) etc. analyze, after coking coal moisture is adjusted to 10%, take 380kg (mCoal i) coking coal is placed in carton, with charging car by paper
Case advances in coke oven burner hearth, closes fire door and starts heating schedule and start coking, through the high-temperature retorting (18h-of certain time
22h), after coke maturation, stop coking test, with pusher machine coke released in burner hearth and carry out quenching, treating that coke is down to
Carry out various detection after room temperature to analyze, obtain the gross mass (m of cokeBurnt i), sulphur content (StSingle burnt i) etc. data.Calculated by computing formula
Go out the complete burnt rate (K of this coking coali) and sulphur content transformation ratio (Yi).Through a series of 300kg small coke oven coking tests, just can obtain
Go out complete burnt rate (K) and the sulphur content transformation ratio (Y) of all single grade coal.300kg coke oven and commercial coke oven good relationship in this example,
A value takes 0.
Table 1
By in upper table numerical value substitute into St join Jiao computing formula:
Embodiment 2
In big coke oven produces, the embodiment of the present invention 2 is predicted that mixed coal is smelted in coke and is coordinated described in the method for sulphur content
Coal smelts the sulphur content prediction computational methods of coke:
In formula:
StJoin Jiao: mixed coal smelts the sulphur content predictive value of coke, %；
StSingle coal i: the sulphur content of single grade coal i, %；
Ki: the complete burnt rate of single grade coal i coking, %；
Xi: single grade coal i quality adapted ratio in mixed coal, %；
Yi: the sulphur content transformation ratio of single grade coal i.
A: correction value, for revising the error between coking test and big coke oven production.
By the related data organizing Coal Blending Schemes, it was predicted that go out the sulphur content of corresponding coke, the then big coke oven with actual production more
Sulphur content in the coke produced, contrasts, and the meansigma methods of all differences is correction value a.
The sulphur content transformation ratio of described single grade coal i is:
Yi=StSingle burnt i/StSingle coal i, wherein, StSingle burnt iThe sulphur content of coke, St is smelted for single grade coal i in coking testSingle coal iFor single
The sulphur content of coal i.
Described StSingle coal i、StSingle burnt iAccording to GB (GB/T 25214-2010) " full content of Sulphur in coal mensuration infrared spectrometry " detection point
Analysis draws.
Complete burnt rate K of single grade coal i cokingi=mBurnt/mCoal, wherein, described mBurntFor gained coke after coking test or cinder
Quality, kg；Described mCoalFor the quality of coking single grade coal i, kg before coking test.
Below as a example by one group of Coal Blending Schemes of 6m commercial coke oven, calculated by said method, it was predicted that mixed coal smelting
The sulphur content (measured value is 0.71%) of coking charcoal.
First carry out coking test, calculate the complete burnt rate (K of all single grade coali) and sulphur content transformation ratio (Yi).Coking test
Use 40kg small coke oven coking test, method particularly includes: being carried out by coking coal broken and mix, sulphur content in coal is done in sampling after a while
(StSingle coal i) etc. analyze, after coking coal moisture is adjusted to 10%, take 50kg (mCoal) coking coal is placed in ferrum case, then is placed in by ferrum case
In 40kg small coke oven burner hearth, and start heating schedule and start coking, through the high-temperature retorting (14h-19h) of certain time, treat Jiao
Stop coking test after charcoal maturation, the ferrum case filling coke is taken out in burner hearth and carries out quenching, after coke is down to room temperature
Carry out various detection to analyze, obtain the gross mass (m of cokeBurnt), the data such as sulphur content.The complete of this coking coal is calculated by computing formula
Burnt rate (Ki) and sulphur content transformation ratio (Yi).Through a series of 40kg small coke oven coking tests, the complete of all single grade coal just can be drawn
Burnt rate (K) and sulphur content transformation ratio (Y).In this example, 40kg coke oven is taken as-0.02 with the adjusted value a of commercial coke oven.
The numbers such as one group of Coal Blending Schemes of 6m commercial coke oven and the corresponding sulphur content of single grade coal, sulphur content transformation ratio and complete burnt rate
According to being listed in the table below in 1, numerical value in table is substituted into StJoin JiaoComputing formula, the most measurable coke being carried out by this Coal Blending Schemes producing
Middle sulphur content content.
Table 2
By in upper table numerical value substitute into St join Jiao computing formula:
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage:
(1) the inventive method is based on coking test result, turns with sulphur content, single grade coal sulphur content in process of coking of single grade coal
Change coefficient and complete burnt rate and single grade coal adapted ratio in mixed coal etc., as a parameter to prediction sulfur content in coke, take into full account
The different single grade coal diversityes after smelting coke, overcome empirical equation turning the sulphur content of different coals in prior art
Change the coefficient shortcoming that is defined as the fixed value on certain interval, it was predicted that precision is greatly improved, it was predicted that model has and is generally suitable for
Property, do not cause precision of prediction to reduce because Coal Blending Schemes variation is too big.
(2) present invention uses big coke oven creation data to carry out predicting the outcome based on small coke oven coking test data
Revise, eliminate the problem that the precision of prediction caused due to the small coke oven deviation that big coke oven exists with commercial production reduces.
(3) when not having condition to carry out small coke oven coking test, the present invention can predict based on carrying out crucible coke test,
Use more flexible.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and amendment to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into all changes and the amendment of the scope of the invention.Obviously, those skilled in the art can be to the present invention
Carry out various change and modification without departing from the spirit and scope of the present invention.So, if these of the present invention are revised and modification
Belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these changes and modification exists
In.
Claims (6)
1. predict that mixed coal smelts the method for sulphur content in coke for one kind, it is characterised in that: described method includes:
Being carried out by coking single grade coal i broken and mix, sample analysis draws the sulphur content of coking single grade coal i；
Regulate the moisture of described coking single grade coal i；
Take described coking single grade coal i and carry out coking test, it is thus achieved that the quality of described coking single grade coal i；
The coke cooling that will obtain after described coking test, it is thus achieved that the quality of described coke；
Detection show that single grade coal i smelts the sulphur content of described coke；
Calculate single grade coal sulphur content transformation ratio and complete burnt rate in process of coking；
In prediction Coal Blending Schemes, mixed coal smelts sulphur content in coke；Described mixed coal smelts the prediction computational methods of sulphur content in coke
For:
In formula:
StJoin Jiao: mixed coal smelts the sulphur content predictive value of coke, %；
StSingle coal i: the sulphur content of single grade coal i, %；
Ki: the complete burnt rate of single grade coal i coking, %；
Xi: single grade coal i quality adapted ratio in mixed coal, %；
Yi: the sulphur content transformation ratio of single grade coal i；
A: correction value, for revising the error between coking test and big coke oven production；
Described i is 1 to n.
Prediction mixed coal the most according to claim 1 smelts the method for sulphur content in coke, it is characterised in that: described single grade coal
The sulphur content transformation ratio of i is: Yi=StSingle burnt i/StSingle coal i, wherein, described StSingle burnt iCoke is smelted for single grade coal i after coking test
Sulphur content, described StSingle coal iSulphur content for single grade coal i.
Prediction mixed coal the most according to claim 1 smelts the method for sulphur content in coke, it is characterised in that: described single grade coal
The complete burnt rate of i coking is Ki=mBurnt/mCoal, wherein, described mBurntFor gained coke after coking test or the quality of cinder；Described mCoalFor
The quality of coking single grade coal i before coking test.
Prediction mixed coal the most according to claim 1 smelts the method for sulphur content in coke, it is characterised in that: described coking tries
Test as crucible coke test or small coke oven coking test.
Prediction mixed coal the most according to claim 4 smelts the method for sulphur content in coke, it is characterised in that: described small coke oven
Coking test is feather weight or hundred feather weight.
Prediction mixed coal the most according to claim 1 smelts the method for sulphur content in coke, it is characterised in that: to assemble coal more
Sulphur content, sulphur content transformation ratio, complete burnt rate and single grade coal adapted ratio in mixed coal in scheme are parameter, it was predicted that go out coal blending
The sulphur content St of the coke that scheme is correspondingJoin Jiao, in the coke that big coke oven produces with actual production, sulphur content carries out contrast and obtains difference,
The meansigma methods of described difference is correction value a.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525882A (en) * | 2017-10-20 | 2017-12-29 | 太原理工大学 | A kind of method for predicting sulfur content in coke |
| CN110797090A (en) * | 2019-04-11 | 2020-02-14 | 邢台旭阳科技有限公司 | Method for predicting sulfur content of coke, method for predicting sulfur conversion rate of coal, method for preparing blended coal, and coking method |
| CN112574767A (en) * | 2020-11-16 | 2021-03-30 | 包头钢铁（集团）有限责任公司 | Determination method for stably improving core process of coking coal thermal state performance detection precision |
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| US6168709B1 (en) * | 1998-08-20 | 2001-01-02 | Roger G. Etter | Production and use of a premium fuel grade petroleum coke |
| CN101447001B (en) * | 2008-12-05 | 2010-10-06 | 中唯炼焦技术国家工程研究中心有限责任公司 | Method for predicting sulfur content in coke |
| CN102746866A (en) * | 2012-06-21 | 2012-10-24 | 徐州伟天化工有限公司 | Accurate prediction method of sulfur content in coke in coal blending for coking |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6168709B1 (en) * | 1998-08-20 | 2001-01-02 | Roger G. Etter | Production and use of a premium fuel grade petroleum coke |
| CN101447001B (en) * | 2008-12-05 | 2010-10-06 | 中唯炼焦技术国家工程研究中心有限责任公司 | Method for predicting sulfur content in coke |
| CN102746866A (en) * | 2012-06-21 | 2012-10-24 | 徐州伟天化工有限公司 | Accurate prediction method of sulfur content in coke in coal blending for coking |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525882A (en) * | 2017-10-20 | 2017-12-29 | 太原理工大学 | A kind of method for predicting sulfur content in coke |
| CN110797090A (en) * | 2019-04-11 | 2020-02-14 | 邢台旭阳科技有限公司 | Method for predicting sulfur content of coke, method for predicting sulfur conversion rate of coal, method for preparing blended coal, and coking method |
| CN112574767A (en) * | 2020-11-16 | 2021-03-30 | 包头钢铁（集团）有限责任公司 | Determination method for stably improving core process of coking coal thermal state performance detection precision |
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| CN106190209B (en) | 2019-10-08 |
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