CN114371113A - Device and method for measuring influence of coke lumpiness on permeability and liquid permeability of blast furnace - Google Patents
Device and method for measuring influence of coke lumpiness on permeability and liquid permeability of blast furnace Download PDFInfo
- Publication number
- CN114371113A CN114371113A CN202111486318.1A CN202111486318A CN114371113A CN 114371113 A CN114371113 A CN 114371113A CN 202111486318 A CN202111486318 A CN 202111486318A CN 114371113 A CN114371113 A CN 114371113A
- Authority
- CN
- China
- Prior art keywords
- liquid
- coke
- permeability
- gas
- detected
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 115
- 239000000571 coke Substances 0.000 title claims abstract description 110
- 230000035699 permeability Effects 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 239000002245 particle Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 7
- 210000001635 urinary tract Anatomy 0.000 claims description 7
- 208000019206 urinary tract infection Diseases 0.000 claims description 4
- 238000012360 testing method Methods 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/007—Conditions of the cokes or characterised by the cokes used
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/0866—Sorption
- G01N2015/0873—Dynamic sorption, e.g. with flow control means
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Fluid Mechanics (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Metallurgy (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Manufacture Of Iron (AREA)
Abstract
The invention provides a device and a method for measuring the influence of coke caking on the permeability and liquid permeability of a blast furnace, wherein the device comprises: the inlet part is used for placing the coke block to be measured; one end of the first sealing part is connected with the inlet part, and the other end of the first sealing part is hermetically provided or provided with a valve connected with the liquid inflow unit; the containing part is used for placing the coke block to be detected; one end of the second sealing part is connected with the inlet part through the accommodating part, and the other end of the second sealing part is hermetically arranged or connected with the gas inflow unit through the valve.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of coke for blast furnace iron making, in particular to a device and a method for measuring influence of coke lumpiness on permeability and liquid permeability of a blast furnace.
[ background of the invention ]
The burden in the blast furnace is reduced due to the layered distribution, and the thickness of the burden layer and the particle size of coke influence the permeability and the liquid permeability of the blast furnace. After entering the blast furnace, coke is affected by chemical actions such as carbon melting loss reaction, alkali metal erosion, slag iron erosion and the like, the quality of the coke is continuously deteriorated, the strength of the coke is reduced, the lumpiness of the coke is gradually reduced, and finally almost all the coke is consumed in the blast furnace. The lump size of the coke, which is one of the most important raw materials in the blast furnace smelting process, can directly indicate the deterioration degree of the quality of the coke. The particle size degradation of coke in the descending process of the blast furnace is serious, so that the permeability and the liquid permeability in the blast furnace are deteriorated, and the stable and smooth operation of the blast furnace is influenced.
The permeability and the liquid permeability of the blast furnace are important parameters of a blast furnace monitoring index, the smooth running condition of the blast furnace is judged according to the pressure difference of gas passing through a material layer and the change rule of the dripping time of liquid in the furnace in a coke bed, whether abnormal conditions of the furnace conditions such as pipelines, suspended materials, collapsed materials and the like occur in the blast furnace can be quickly judged in advance, and the smooth running of the blast furnace is quickly recovered by timely adjusting.
Good air permeability means a large amount of gas passing through the bed, and good liquid permeability means a large amount of dripping passing through the bed. Therefore, the change trend of the permeability and the liquid permeability of the material layer in the furnace can be controlled in time and can be accurately predicted, and the method is very necessary for assisting operators to keep the blast furnace stably and smoothly in actual production. In this case, it is important to establish a new method for measuring the permeability of coke with different particle sizes.
Accordingly, there is a need to develop an apparatus and method for determining the effect of coke caking on the permeability of blast furnace gas to overcome the deficiencies of the prior art and to solve or alleviate one or more of the above-mentioned problems.
[ summary of the invention ]
In view of the above, the invention provides a device and a method for determining the influence of coke caking on the permeability and liquid permeability of a blast furnace, which avoid the problem that the existing index measurement method cannot accurately predict the condition of the blast furnace, provide a new method for characterizing the permeability and liquid permeability of coke, and are suitable for both iron and steel enterprises and laboratory research.
In one aspect, the present invention provides an apparatus for determining the effect of coke caking on the permeability of blast furnace gas, said apparatus comprising:
the inlet part is used for placing the coke block to be measured;
one end of the first sealing part is connected with the inlet part, and the other end of the first sealing part is hermetically provided or provided with a valve connected with the liquid inflow unit;
the containing part is used for placing the coke block to be detected;
and one end of the second sealing part is connected with the inlet part through the accommodating part, and the other end of the second sealing part is hermetically arranged or is connected with the gas inflow unit through a valve.
The aspect and any possible implementation manner as described above further provide an implementation manner in which the accommodating portion is funnel-shaped, a gas-liquid connecting passage is provided at a bottom of the funnel, and the gas inflow unit is connected to the accommodating portion through the gas-liquid connecting passage.
The above aspects and any possible implementations further provide an implementation in which the side of the receptacle is provided with a liquid flow indicator for measuring the flow of the introduced liquid.
There is further provided in accordance with any of the above aspects and possible implementations an implementation in which the access portion is a sealable openable and closable container lid.
In the above aspect and any one of the possible implementations, there is further provided an implementation in which, when the gas permeability measurement is performed, the second sealing portion is provided with a valve connected to the gas inflow unit, and the first sealing portion is provided in a sealing manner.
In the aspect and any one of the possible implementations described above, there is further provided an implementation in which, when performing the liquid permeability measurement, the first sealing portion is provided with a valve connected to the liquid inflow unit, and the second sealing portion is provided in a sealing manner.
The above aspects and any possible implementations further provide a method of determining an effect of coke lumpiness on blast furnace permeability, the method comprising:
s1: randomly selecting a plurality of coke blocks to be detected, and obtaining coke samples to be detected in different particle size ranges through particle size screening;
s2: dividing coke samples to be detected in the same particle size range into a plurality of groups, and respectively placing the groups in a plurality of devices;
s3: the air permeability is measured, and the air flow speed v of the air flowing into the unit is presetQi (Qi)And gas flow rate SQi (Qi)Introducing gas from the second sealing part, and recording the pressure P1Stopping introducing gas, recording pressure value P after a period of time2Calculating and obtaining the pressure difference delta P before and after the gas passes through the coke block to be detected, and the gas permeability of the coke sample to be detected corresponding to the particle size range;
s4: performing a liquid permeability measurement by presetting a liquid flow rate v of the liquid flowing into the cellLiquid for treating urinary tract infectionAnd a flow rate SLiquid for treating urinary tract infectionInjecting liquid from the first sealing part, immersing the liquid above the liquid level of the coke sample to be measured, and recording the liquid flow S at the momentStarting pointStopping filling liquid, opening the valve at the second sealing part, closing the valve when the liquid drops to a certain height, and recording the flow S of the liquid after drippingFinal (a Chinese character of 'gan')Calculating the average time delta t before and after the liquid passes through the coke block to be detected and the liquid permeability of the coke sample to be detected corresponding to the granularity range by using the time t;
s5: and continuously repeating S2-S4 on coke samples to be detected in different particle size ranges to obtain the influence result of the coke lumpiness on the permeability and the liquid permeability of the blast furnace.
The above-mentioned aspect and any possible implementation manner further provide an implementation manner, and the granularity screening in S1 specifically includes: three coke samples were screened over a range of particle sizes including (0mm, 40mm), [40mm, 45mm ] and (45mm, + ∞).
The above aspects and any possible implementations further provide an implementation where the gas flow rate is controlled at vQi (Qi)<5L/min; liquid flow rate controlIs made at vLiquid for treating urinary tract infection<3L/min。
In accordance with the above aspect and any possible implementation manner, there is further provided an implementation manner, in which the pressure difference Δ P is a pressure difference corresponding to the gas before and after passing through the coke material layer;
ΔP＝P2-P1；
the larger the value of Δ P, the better the permeability of coke, and the worse the permeability
The time t is the time required for the liquid to flow through the coke material layer and descend to a certain height;
Δ t is an average value of t of several groups in the same particle diameter range, and smaller Δ t means better coke liquid permeability, and conversely worse.
Compared with the prior art, the invention can obtain the following technical effects: the invention improves the problem that the air permeability and liquid permeability of the blast furnace cannot be accurately predicted originally, avoids the error between the simulated blast furnace reaction process and the actual reaction, and directly characterizes the air permeability and liquid permeability of the blast furnace material layer by the coke lumpiness so as to guide the material distribution system of the blast furnace. The method can simply, quickly and accurately detect the influence of the cokes with different particle sizes on the permeability and the liquidity of the blast furnace charge layer, and provides a new idea and a new method for analyzing and judging the permeability and the liquidity of the coke lumpiness on different thicknesses of the material layer.
Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a block diagram of an apparatus provided in one embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
As shown in fig. 1, the present invention provides an apparatus for measuring the influence of coke lumpiness on permeability of blast furnace gas, comprising:
the inlet part is used for placing the coke block to be measured;
one end of the first sealing part is connected with the inlet part, and the other end of the first sealing part is hermetically provided or provided with a valve connected with the liquid inflow unit;
the containing part is used for placing the coke block to be detected;
and one end of the second sealing part is connected with the inlet part through the accommodating part, and the other end of the second sealing part is hermetically arranged or is connected with the gas inflow unit through a valve.
The holding part is funnel-shaped, a gas-liquid connecting channel is arranged at the bottom of the funnel, and the gas inflow unit is connected with the holding part through the gas-liquid connecting channel. The side surface of the accommodating part is provided with a liquid flow mark for measuring the flow of the introduced liquid. The inlet part is a container cover capable of sealing the switch. When the air permeability is measured, the second sealing part is provided with a valve to be connected with the air inflow unit, and the first sealing part is arranged in a sealing mode. When liquid permeability measurement is performed, the first sealing part is provided with a valve to be connected with the liquid inflow unit, and the second sealing part is arranged in a sealing manner.
The invention also provides a method for determining the influence of coke caking on the permeability and liquid permeability of a blast furnace, which comprises the following steps:
s1: randomly selecting a plurality of coke blocks to be detected, and obtaining coke samples to be detected in different particle size ranges through particle size screening;
s2: dividing coke samples to be tested in the same particle size range into a plurality of groups, and respectively placing the groups in a plurality of devices as claimed in any one of the claims 1 to 6;
s3: the air permeability is measured, and the air flow speed v of the air flowing into the unit is presetQi (Qi)And gas flow rate SQi (Qi)Introducing gas from the second sealing part, and recording the pressure P1Stopping introducing gas, recording pressure value P after a period of time2Calculating and obtaining the pressure difference delta P before and after the gas passes through the coke block to be detected, and the gas permeability of the coke sample to be detected corresponding to the particle size range;
s4: performing a liquid permeability measurement by presetting a liquid flow rate v of the liquid flowing into the cellLiquid for treating urinary tract infectionAnd a flow rate SLiquid for treating urinary tract infectionInjecting liquid from the first sealing part, immersing the liquid above the liquid level of the coke sample to be measured, and recording the liquid flow S at the momentStarting pointStopping filling liquid, opening the valve at the second sealing part, closing the valve when the liquid drops to a certain height, and recording the flow S of the liquid after drippingFinal (a Chinese character of 'gan')Calculating the average time delta t before and after the liquid passes through the coke block to be detected and the liquid permeability of the coke sample to be detected corresponding to the granularity range by using the time t;
s5: and continuously repeating S2-S4 on coke samples to be detected in different particle size ranges to obtain the influence result of the coke lumpiness on the permeability and the liquid permeability of the blast furnace.
The step of screening the granularity in the S1 specifically comprises the following steps: the particle size range of the screening includes (0mm, 40mm), [40mm, 45mm]And (45mm, + ∞) of the coke samples. The gas flow rate is controlled at vQi (Qi)<5L/min; the flow rate of the liquid is controlled at vLiquid for treating urinary tract infection<3L/min. The pressure difference delta P is the corresponding pressure difference before and after the gas passes through the coke material layer;
ΔP＝P2-P1；
the larger the value of Δ P, the better the permeability of coke, and the worse the permeability
The time t is the time required for the liquid to flow through the coke material layer and descend to a certain height;
Δ t is an average value of t of several groups in the same particle diameter range, and smaller Δ t means better coke liquid permeability, and conversely worse.
Example 1:
the invention provides a method for measuring the permeability and liquid permeability of coke with different particle sizes. The method avoids the problem that the existing index measurement method cannot accurately predict the condition of the blast furnace, provides a new method for representing the permeability of the coke, and is suitable for iron and steel enterprises and laboratory research. The technical scheme adopted by the invention mainly comprises the following steps:
(1) randomly selecting a plurality of pieces of coke entering a furnace as the experimental sample, and sieving the coke by using a particle size sieving device to obtain a plurality of standard coke samples A to be tested which are smaller than 40mm, a plurality of standard coke samples B to be tested which are 40-45mm, and a plurality of standard coke samples C to be tested which are larger than 50 mm;
(2) respectively placing part of sample A, B or C to be measured in a prepared air-permeable liquid-permeable model, introducing air, and setting gas flow velocity vQi (Qi)And the pressure value P of the initially introduced gas1(ii) a Another part of the sample A, B or C to be measured is respectively placed in the prepared air-permeable and liquid-permeable model, liquid is injected from the top of the device, and the liquid flow velocity v is setLiquid for treating urinary tract infectionSum flow S1；
(3) After the preparation is finished, firstly, the air permeability of the sample with the same granularity is tested, and the pressure value P of the gas passing through the material layer is recorded2Completing 1 group of tests; secondly, performing liquid permeability test on the coke sample with the same granularity, and recording the dropping amount S of the liquid passing through the coke material layer2And dropping time t, and finishing 1 group of tests;
(4) continuously repeating the steps (2) and (3) on coke samples with the same granularity, and carrying out a plurality of groups of permeability tests;
(5) carrying out statistics on pressure values obtained by multiple groups of tests on samples with the same particle size to obtain the pressure difference (delta P) of gas passing through a coke material layer; the delta P represents the permeability of the blast furnace to coke with different particle sizes. Similarly, counting the time t obtained by testing a plurality of groups of samples with the same particle size to obtain the drop volume change (delta S) of liquid passing through a coke material layer and the service time (t); Δ S characterizes the liquid permeability of the coke bed of different particle sizes in the furnace.
In the step (1) of the technical scheme, a detection sample is prepared by a method of randomly selecting a plurality of pieces of coke to be charged, and the granularity of the coke is less than 40mm, 40-45mm and more than 50 mm.
In the step (2) of the above technical solution, the gas flow rate is vQi (Qi)At 5L/min, liquid flow rate vLiquid for treating urinary tract infection＝3L/min；
In the step (4) of the technical scheme, at least 5 groups of repeated tests are carried out on the same coke granularity to ensure the accuracy of the experimental result.
In the step (5) of the technical scheme, the pressure difference (delta P) is the corresponding pressure value change before and after the gas passes through the coke material layer; the drop change (Δ S) is the corresponding flow change before and after the liquid passes through the coke bed.
In the step (5) of the technical scheme, the larger the value of delta P is, the better the permeability of the coke bed in the furnace is, otherwise, the worse the permeability is; the larger the Δ S value, the better the liquid permeability in the blast furnace, and the worse the Δ S value.
Example 2:
(1) randomly selecting a plurality of pieces of coke fed into a steel mill in the same batch as an experimental sample, and respectively obtaining 40 standard coke samples A to be tested with the particle size of less than 40mm, 40 standard coke samples B to be tested with the particle size of 40-45mm and 40 standard coke samples C to be tested with the particle size of more than 50mm by particle size screening;
(2) firstly, 20 standard samples A with the size less than 40mm are taken and placed in a breathable liquid-permeable device (ensuring the sealing of a model), air is introduced from the bottom of the model, and a pressure value P is recorded1Setting the flow rate of the introduced air to be 5L/min;
(3) after the preparation, the sample is subjected to air permeability test, air is introduced from the bottom of the model, and the top pressure P of the gas passing through the coke bed is recorded after 5min2Completing 1 group of tests;
(4) continuously repeating the steps (2) and (3) on coke samples with the particle size of 40-45mm (sample B) and more than 50mm (sample C), and respectively carrying out 5 groups of permeability test experiments;
(5) taking another 20 standard samples A with a size less than 40mm, placing in a gas-permeable liquid-permeable device, and injecting liquid from the top of the modelSubmerging the coke to a certain height and recording the liquid volume S1Setting the liquid flow rate to be 3L/min;
(6) after the preparation, the liquid permeability of the sample is tested, the liquid is controlled to drip from the bottom of the device, and when the liquid falls to a certain height, the volume S of the liquid in the container is recorded2And the time t for the liquid to descend, completing 1 group of tests;
(7) continuously repeating the steps (5) and (6) on coke samples with the particle size of 40-45mm (sample B) and more than 50mm (sample C), and respectively carrying out 5 groups of liquid permeability test experiments;
(8) 5 sets of tests were performed on each sample, and the resulting pressure difference Δ P was counted over time t to yield, finally: delta PA；ΔPB；ΔPC；tA；tB；tC。
The apparatus and method for determining the influence of coke caking on the permeability of blast furnace gas provided by the embodiments of the present application are described in detail above. The above description of the embodiments is only for the purpose of helping to understand the method of the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
As used in the specification and claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (10)
1. An apparatus for determining the effect of coke caking on the permeability of blast furnace permeability, said apparatus comprising:
the inlet part is used for placing the coke block to be measured;
one end of the first sealing part is connected with the inlet part, and the other end of the first sealing part is hermetically provided or provided with a valve connected with the liquid inflow unit;
the containing part is used for placing the coke block to be detected;
and one end of the second sealing part is connected with the inlet part through the accommodating part, and the other end of the second sealing part is hermetically arranged or is connected with the gas inflow unit through a valve.
2. The apparatus according to claim 1, wherein the receiving portion is funnel-shaped, a gas-liquid connection passage is provided at a bottom of the funnel, and the gas inflow unit is connected to the receiving portion through the gas-liquid connection passage.
3. The device of claim 1, wherein the sides of the receptacle are provided with liquid flow indicators for measuring the flow of liquid therethrough.
4. The device of claim 1, wherein the inlet portion is a sealable openable and closable container lid.
5. The apparatus of claim 1, wherein the second sealing portion is provided with a valve to connect the gas inflow unit and the first sealing portion is provided to be sealed when the gas permeability measurement is performed.
6. The device according to claim 1, wherein the first sealing portion is provided with a valve for connecting the liquid inflow unit and the second sealing portion is provided with a seal for liquid permeability measurement.
7. A method of determining the effect of coke lumpiness on blast furnace permeability, comprising:
s1: randomly selecting a plurality of coke blocks to be detected, and obtaining coke samples to be detected in different particle size ranges through particle size screening;
s2: dividing coke samples to be tested in the same particle size range into a plurality of groups, and respectively placing the groups in a plurality of devices as claimed in any one of the claims 1 to 6;
s3: the air permeability is measured, and the air flow speed v of the air flowing into the unit is presetQi (Qi)And gas flow rate SQi (Qi)Introducing gas from the second sealing part, and recording pressureP1Stopping introducing gas, recording pressure value P after a period of time2Calculating and obtaining the pressure difference delta P before and after the gas passes through the coke block to be detected, wherein the pressure difference delta P corresponds to the air permeability of the coke sample to be detected in the granularity range;
s4: performing a liquid permeability measurement by presetting a liquid flow rate v of the liquid flowing into the cellLiquid for treating urinary tract infectionAnd a flow rate SLiquid for treating urinary tract infectionInjecting liquid from the first sealing part, immersing the liquid above the liquid level of the coke sample to be measured, and recording the liquid flow S at the momentStarting pointStopping filling liquid, opening the valve at the second sealing part, closing the valve when the liquid drops to a certain height, and recording the flow S of the liquid after drippingFinal (a Chinese character of 'gan')Calculating the average time delta t before and after the liquid passes through the coke block to be detected by using the time t, wherein the average time delta t corresponds to the liquid permeability of the coke sample to be detected in the granularity range;
s5: and continuously repeating S2-S4 on coke samples to be detected in different particle size ranges to obtain the influence result of the coke lumpiness on the permeability and the liquid permeability of the blast furnace.
8. The method according to claim 7, wherein the step of S1 comprises the following specific steps: three coke samples were screened over a range of particle sizes including (0mm, 40mm), [40mm, 45mm ] and (45mm, + ∞).
9. The method of claim 7, wherein the gas flow rate is controlled at vQi (Qi)<5L/min; the flow rate of the liquid is controlled at vLiquid for treating urinary tract infection<3L/min。
10. The method of claim 7, wherein the pressure difference Δ Ρ is the pressure difference corresponding to the gas before and after passing through the coke bed;
ΔP＝P2-P1；
the larger the value of Δ P, the better the permeability of coke, and the worse the permeability
The time t is the time required for the liquid to flow through the coke material layer and descend to a certain height;
Δ t is an average value of t of several groups in the same particle diameter range, and smaller Δ t means better coke liquid permeability, and conversely worse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486318.1A CN114371113A (en) | 2021-12-07 | 2021-12-07 | Device and method for measuring influence of coke lumpiness on permeability and liquid permeability of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486318.1A CN114371113A (en) | 2021-12-07 | 2021-12-07 | Device and method for measuring influence of coke lumpiness on permeability and liquid permeability of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114371113A true CN114371113A (en) | 2022-04-19 |
Family
ID=81139367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111486318.1A Pending CN114371113A (en) | 2021-12-07 | 2021-12-07 | Device and method for measuring influence of coke lumpiness on permeability and liquid permeability of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114371113A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2858646Y (en) * | 2005-10-26 | 2007-01-17 | 首钢总公司 | Apparatus for coke quenching using coke-oven gas |
| US20080282841A1 (en) * | 2005-10-24 | 2008-11-20 | Hans Werner Bogner | Method and Device for Charging Feedstock |
| CN101936979A (en) * | 2009-06-30 | 2011-01-05 | 宝山钢铁股份有限公司 | Strength determination method and device for reacted blast furnace coke |
| CN102183449A (en) * | 2011-03-17 | 2011-09-14 | 北京科技大学 | Method for measuring permeability index of front coke or carbocoal of COREX or blast-furnace tuyere |
| CN103969164A (en) * | 2013-12-24 | 2014-08-06 | 河北钢铁股份有限公司邯郸分公司 | Device and method for determining gas permeability of cohesive zone coke layer |
| CN106706494A (en) * | 2016-12-09 | 2017-05-24 | 辽宁科技大学 | Determination method of material column liquid permeability index in COREX smelter-gasifier |
| CN106802270A (en) * | 2017-01-19 | 2017-06-06 | 北京科技大学 | A kind of dead stock column voidage assay method of blast furnace |
| CN107142346A (en) * | 2017-04-17 | 2017-09-08 | 东北大学 | A kind of method for determining iron ore soft heat gas permeability |
| US20170283891A1 (en) * | 2014-09-03 | 2017-10-05 | Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd. | Method for detecting air flow distribution in blast furnace |
| CN107643242A (en) * | 2017-08-17 | 2018-01-30 | 武汉科技大学 | A kind of evaluation method and device of blast furnace stock column liquid permeability |
| CN110346538A (en) * | 2019-07-12 | 2019-10-18 | 重庆大学 | A kind of continuous transformation of high temperature becomes iron ore performance measurement method under atmospheric condition |
| CN211713008U (en) * | 2019-12-30 | 2020-10-20 | 华泰永创(北京)科技股份有限公司 | Coke discharging device and dry quenching equipment |
| CN113416807A (en) * | 2021-05-25 | 2021-09-21 | 鞍钢股份有限公司 | Charging method for improving air permeability in large-scale blast furnace |
-
2021
- 2021-12-07 CN CN202111486318.1A patent/CN114371113A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080282841A1 (en) * | 2005-10-24 | 2008-11-20 | Hans Werner Bogner | Method and Device for Charging Feedstock |
| CN2858646Y (en) * | 2005-10-26 | 2007-01-17 | 首钢总公司 | Apparatus for coke quenching using coke-oven gas |
| CN101936979A (en) * | 2009-06-30 | 2011-01-05 | 宝山钢铁股份有限公司 | Strength determination method and device for reacted blast furnace coke |
| CN102183449A (en) * | 2011-03-17 | 2011-09-14 | 北京科技大学 | Method for measuring permeability index of front coke or carbocoal of COREX or blast-furnace tuyere |
| CN103969164A (en) * | 2013-12-24 | 2014-08-06 | 河北钢铁股份有限公司邯郸分公司 | Device and method for determining gas permeability of cohesive zone coke layer |
| US20170283891A1 (en) * | 2014-09-03 | 2017-10-05 | Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd. | Method for detecting air flow distribution in blast furnace |
| CN106706494A (en) * | 2016-12-09 | 2017-05-24 | 辽宁科技大学 | Determination method of material column liquid permeability index in COREX smelter-gasifier |
| CN106802270A (en) * | 2017-01-19 | 2017-06-06 | 北京科技大学 | A kind of dead stock column voidage assay method of blast furnace |
| CN107142346A (en) * | 2017-04-17 | 2017-09-08 | 东北大学 | A kind of method for determining iron ore soft heat gas permeability |
| CN107643242A (en) * | 2017-08-17 | 2018-01-30 | 武汉科技大学 | A kind of evaluation method and device of blast furnace stock column liquid permeability |
| CN110346538A (en) * | 2019-07-12 | 2019-10-18 | 重庆大学 | A kind of continuous transformation of high temperature becomes iron ore performance measurement method under atmospheric condition |
| CN211713008U (en) * | 2019-12-30 | 2020-10-20 | 华泰永创(北京)科技股份有限公司 | Coke discharging device and dry quenching equipment |
| CN113416807A (en) * | 2021-05-25 | 2021-09-21 | 鞍钢股份有限公司 | Charging method for improving air permeability in large-scale blast furnace |
Non-Patent Citations (2)
| Title |
|---|
| GUPTA S: "Coke graphitization and defradation across the tuyere regions in a blast furnace", 《FUEL》, vol. 113, 31 December 2013 (2013-12-31), pages 77 - 85, XP028698601, DOI: 10.1016/j.fuel.2013.05.074 * |
| 湛文龙: "COREX熔融气化炉内料柱的透液性指数及影响因素", 《北京科技大学学报》, vol. 36, no. 9, 30 September 2014 (2014-09-30), pages 1241 - 1246 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108918330A (en) | For studying the device and method that alkali metal STRENGTH ON COKE reactivity influences under vapor and carbon dioxide conditions | |
| CN111443184B (en) | Test device and method for simulating iron ore state under blast furnace ironmaking condition | |
| CN109142412A (en) | The X-fluorescence measuring method of zinc, iron, Ti content during a kind of blast furnace dry method dust is grey | |
| CN107782853A (en) | A kind of evaluation system for being used to detect deoxidier performance | |
| CN113640173A (en) | Coke degradation evaluation method under simulated blast furnace dynamic reaction | |
| CN110133193A (en) | Portable micro oxygen analyzer calibrating apparatus and method | |
| CN114371113A (en) | Device and method for measuring influence of coke lumpiness on permeability and liquid permeability of blast furnace | |
| CN106323904A (en) | Detection method of content of sulfur in sulfur iron alloy | |
| KR101310800B1 (en) | Tester for raw materials for coke | |
| CN107236852A (en) | Orientation silicon steel decarburization annealing furnace furnace gas moves towards the monitoring method with distribution condition | |
| US4319479A (en) | Method and an apparatus for detecting leakage of cooling water by measuring dissolved CO amount | |
| RU2375659C1 (en) | Automated control system of agglomerate quality | |
| CN109580326A (en) | The measuring method of zinc oxide and alkali metal in a kind of dedusting ash | |
| CN114067926A (en) | Drum strength prediction method for sintering ore of each material layer of sintering trolley | |
| CN105784746A (en) | Method for detecting ferrosilicon element by combing graphite crucible sample melting with X-ray fluorescence | |
| CN107860680B (en) | Analysis method for blast furnace tuyere coke granularity composition and slag retention | |
| CN113791108A (en) | Method for measuring reflow dripping performance of iron-containing raw material | |
| CN110274841B (en) | Diagnosis method and device for screening process in sintered fuel grain size composition detection system | |
| CN108195746B (en) | Test device and method for evaluating alkali metal corrosion resistance of refractory material | |
| CN109633074A (en) | A kind of method of self-produced coke production hot performance standard sample | |
| CN219770264U (en) | Quantifiable inert gas deoxidizing airtight packaging device | |
| CN215812760U (en) | Device for obtaining slag measuring sample for enriching impurities in aluminum melt | |
| CN111781088B (en) | Method for detecting hydrogen content in solid metal | |
| CN110687004B (en) | Device and method for testing smelting performance of blast furnace blocky strip iron ore | |
| CN114850414B (en) | Preparation method of particle steel molten sheet and method for measuring particle steel components |
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 |