CN106833789A - The method for improving dross coal and quick lime mixing pelletizing elevated temperature strength - Google Patents
The method for improving dross coal and quick lime mixing pelletizing elevated temperature strength Download PDFInfo
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- CN106833789A CN106833789A CN201611035742.3A CN201611035742A CN106833789A CN 106833789 A CN106833789 A CN 106833789A CN 201611035742 A CN201611035742 A CN 201611035742A CN 106833789 A CN106833789 A CN 106833789A
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- pelletizing
- quick lime
- dross coal
- binding agent
- rubber
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
- C10L5/36—Shape
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/02—Combustion or pyrolysis
Abstract
Method the invention discloses dross coal and quick lime mixing pelletizing elevated temperature strength is improved.The method of the invention includes：(1) rock wool, rubber are crushed respectively, the product mixing after crushing obtains compound binding agent；(2) mix with the compound binding agent after crushing dross coal, quick lime, obtain compound；(3) compound is carried out into heat pre-treatment；(4) product after heat pre-treatment is carried out high-pressure molding treatment again and forms molding materials；(5) molding materials are carried out into screening process, obtains pelletizing；(6) pelletizing is pyrolyzed, is obtained the dross coal and quick lime mixing pelletizing of high compressive strength.The inventive method feasible process, raw material is easy to get, and can significantly improve the intensity of dross coal and quick lime mixing pelletizing high temperature.
Description
Technical field
The present invention relates to a kind of raising dross coal and the method for quick lime mixing pelletizing elevated temperature strength, belong to the preparation of pelletizing
Field.
Background technology
When being heated under conditions of completely cutting off air, the organic matter macromolecular in coal is thermally decomposed bituminous coal, forms gas, liquid, solid
The mixture of three-phase coexistence, referred to as gel, gel bond the ability of itself or external inert substance, and referred to as coal is viscous
Knot property.The coal strong for caking property, liquid product is more and mobility is suitable in gel, between preferably being filled with solid particle
Gap has certain viscosity again；But now, gel poor air permeability, the gaseous products in gel can not be separated out freely, therefore be gone out
Existing swelling, as temperature is raised, the liquid product in gel is produced and further decomposed.A part of thermal decomposition product is in gaseous state
Continue to separate out；Another part then combines together with solid granulates, thermal polycondensation and solidify, generate high intensity semicoke.For without viscous
Knot property or weak caking coal, the liquid product in gel seldom, far can not can not even soak full of solid granulates gap
Profit solid granulates surface, gaseous products are freely separated out, each self-dispersing of solid particle, cause half char strength of generation very poor.
At present, for dross coal, after pyrolysis, intensity is very poor, how to tie up for its shaping pelletizing with quick lime
It is the problem for urgently needing in production practices to solve to hold it and later elevated temperature strength is pyrolyzed with quick lime mixing pelletizing.
The content of the invention
After an object of the present invention is directed to the mixing pelletizing pyrolysis of dross coal and quick lime, the compression strength of pelletizing
Very poor the problems such as, it is desirable to provide a kind of application compound binding agent improves the side of dross coal and quick lime mixing pelletizing elevated temperature strength
Method；
The second object of the present invention is to provide a kind of dedicated system for realizing methods described；
Above-mentioned purpose of the invention is achieved through the following technical solutions：
A kind of method that application compound binding agent improves dross coal and quick lime mixing pelletizing elevated temperature strength, including：(1) will
Rock wool, rubber are crushed respectively, the product mixing after crushing, obtain compound binding agent；(2) by dross coal, quick lime crush after with
The compound binding agent mixing, obtains compound；(3) compound is carried out into heat pre-treatment；(4) by the product after heat pre-treatment
Thing carries out high-pressure molding treatment and forms molding materials again；(5) molding materials are carried out into screening process, obtains pelletizing；(6) by pelletizing
It is pyrolyzed, is obtained the dross coal and quick lime mixing pelletizing of high compressive strength.
By rock wool pulverization process in step (1), the granularity of rock wool is less than 3mm to after crushing；Rubber pulverizing is processed, to powder
The granularity of broken rear rubber is less than 1mm.
Preferably, count in mass ratio, the ratio of rock wool and rubber is (1~3):(2~4).
Preferably, described rock wool is to be with natural rock such as basalt, brightness feldspar, dolomite, iron ore, bauxite etc.
Primary raw material, the inorganic fibre being made by high temperature melting, fibrosis.
Preferably, the rubber is heat curing-type rubber.It is further preferred that the heat curing-type rubber includes but is not limited to three
Any one of first EP rubbers, nitrile rubber, cis-butadiene cement or silicon substrate glue are various.
By dross coal, quick lime and compound binding agent according to 100 in step (2):(90~120):The quality of (15~35)
Ratio is mixed.Preferably, the adhesive index of the dross coalR.IBe 0, it is further preferred that the dross coal include but
It is not limited to jet coal or lignite.
Granularity after the quick lime is crushed is less than 0.15mm；Granularity is less than 0.15mm after dross coal is crushed,
The moisture of the dross coal is less than 5%.
The heating-up temperature of heat pre-treatment described in step (3) is 200 DEG C~300 DEG C.
Being put into the material after preheating in step (4) carries out high-pressure molding treatment in high-pressure ball press, described pressure is excellent
Elect 15~20MPa as.
The pelletizing of compacting is carried out screening process by step in (5) by roller screen.Preferably, the granularity of screening is in more than 5mm.
Shaping pelletizing is put into electric furnace in step (6) is pyrolyzed.Preferably, by pyrolysis temperature control 700~900
℃。
It is high with quick lime mixing pelletizing using compound binding agent raising dross coal invention further provides realizing
The dedicated system of warm intensity, including：
Reducing mechanism, the reducing mechanism is provided with product exit after material charging aperture to be comminuted and crushing；
Mixing arrangement, the mixing arrangement is provided with the outlet of product after thing material charging aperture to be mixed and mixing；
Annealing device, the annealing device is provided with the outlet of product after material charging aperture to be heated and heat treatment；
High-pressure molding device, the high-pressure molding device is provided with the outlet after product after high-pressure molding material charging aperture and high-pressure molding；
Screening plant, the screening plant is provided with product exit after material charging aperture to be sieved and screening.
Pyrolysis installation, the pyrolysis installation is provided with the outlet after product after pyrolysis material charging aperture and pyrolysis.
Wherein, after the crushing of the reducing mechanism outlet of product and mixing arrangement thing material charging aperture phase to be mixed
Even；The outlet of product is connected with the material charging aperture to be heated of annealing device after the mixing of the mixing arrangement；The heat
The outlet of product and high-pressure molding device treats that high-pressure molding material charging aperture is connected after the heat treatment of processing unit；The high pressure
The outlet of product is connected with the material charging aperture to be sieved of the screening plant after the high-pressure molding of shaped device；The screening dress
The outlet of product is connected with the material charging aperture to be pyrolyzed of the pyrolysis installation on the sieve put.Preferably, described high-pressure molding
Device is high-pressure ball press, and described pyrolysis installation is pyrolysis oven.
Rock wool and rubber combined binding agent that the present invention is added, when during heating, rock wool can melt, can be compared with
Be filled with solid particle gap well has certain viscosity again, makes the gaseous products in moulding stick freely to separate out, equivalent to bonding
The gel of property coal, with the further rising of temperature, rubber powder can occur carbonization reaction, thermal polycondensation and solidify.Exactly because
This compound binding agent effectively simulates the coking process of bituminous coal so that pyrolysis after pelletizing compression strength be not added with gluing
Knot agent is compared and significantly improved.
Brief description of the drawings
Fig. 1 present invention application compound binding agents improve dross coal and the dedicated system of quick lime mixing pelletizing elevated temperature strength
Structural representation；
The technique that Fig. 2 present invention application compound binding agents improve dross coal and the method for quick lime mixing pelletizing elevated temperature strength
Flow chart.
Description of reference numerals：S100- reducing mechanisms, S200- mixing arrangements, S300- annealing devices, S400- high pressures into
Type device, S500- screening plants, S600- pyrolysis installations.
Specific embodiment
Further describe the present invention with reference to specific embodiment, advantages of the present invention and feature will be with description and
It is apparent.It should be understood that the embodiment is only exemplary, any limitation is not constituted to the scope of the present invention.This area
Technical staff should be understood that without departing from the spirit and scope of the invention can to the details of technical solution of the present invention and
Form is modified or is replaced, but these modifications or replacement each fall within protection scope of the present invention.
With reference to Fig. 1, it is strong with quick lime mixing pelletizing high temperature that application compound binding agent provided by the present invention improves dross coal
The dedicated system of degree, including：
Reducing mechanism S100, the reducing mechanism S100 are provided with the outlet of product after material charging aperture to be comminuted and crushing；
Mixing arrangement S200, the mixing arrangement S200 are provided with the outlet of product after material charging aperture to be mixed and mixing；
Annealing device S300, the annealing device S300 are provided with product after material charging aperture to be heated and heat treatment
Outlet；
High-pressure molding device S400, the extrusion forming device S400 be provided with treat high-pressure molding material charging aperture and high pressure into
The outlet of product after type；
Screening plant S500, the screening plant S500 are provided with the outlet of product after material charging aperture to be sieved and screening.
Pyrolysis installation S600, the pyrolysis installation S600 are provided with the outlet after product after pyrolysis material charging aperture and pyrolysis.
As a kind of preferred structure of dedicated system of the present invention, after the crushing of reducing mechanism S100 the outlet of product with
The material charging aperture to be mixed of mixing arrangement S200 is connected；The outlet of product and annealing device after the mixing of mixing arrangement S200
The material charging aperture to be heated of S300 is connected；The outlet of product and high-pressure molding device after the heat treatment of annealing device S300
The material charging aperture of S400 is connected；The outlet of product and treating for screening plant S500 after the high-pressure molding of high-pressure molding device S400
Screening materials carrying charging aperture is connected；The outlet of product feeds with the material to be pyrolyzed of pyrolysis installation S600 on the sieve of screening plant S500
Mouth is connected.Described high-pressure molding device S400 is preferably high-pressure ball press；Described pyrolysis installation S600 is preferably pyrolysis oven.
Dross coal and quick lime mixing ball are improved to application compound binding agent of the invention below in conjunction with specific embodiment
The method of group's elevated temperature strength is specifically described：
Embodiment 1
By the rock wool crushed and rubber powder according to 1:2 mass ratio is well mixed, and prepares compound binding agent, then will
Broken dross coal, quick lime is with the binding agent for preparing according to 1:0.9:0.15 mass ratio is mixed, to be mixed uniform
Afterwards, 200 DEG C are preheated to be heat-treated, high-pressure molding is carried out by high-pressure ball press, the compression strength of pelletizing is generated after screening
As shown in table 1, then pelletizing is put into pyrolysis oven, sets destructive distillation final temperature as 700 DEG C, the residence time is 1.5 hours.It has been pyrolyzed
Cheng Hou, taking out the pelletizing after pyrolysis carries out compression strength detection, and its compression strength is shown in Table 2.
The pelletizing compression strength of 1 embodiment of table 1 is detected
Compression strength detection after the pyrolysis of the pelletizing of 2 embodiment of table 1
Embodiment 2
By the rock wool crushed and rubber powder according to 1:1 mass ratio is well mixed, and prepares compound binding agent, then will
Broken dross coal, quick lime is with the binding agent for preparing according to 1:1.2:0.3 mass ratio is mixed, to be mixed uniform
Afterwards, 240 DEG C are preheated to be heat-treated, are molded by high-pressure ball press, the compression strength such as table 3 of pelletizing is generated after screening
It is shown, then put it into pyrolysis oven, destructive distillation final temperature as 800 DEG C is set, the residence time is 1.5 hours.After the completion of pyrolysis, take
The pelletizing gone out after pyrolysis carries out compression strength detection, and its compression strength is shown in Table 4.
The pelletizing compression strength of 3 embodiment of table 2 is detected
Compression strength detection after the pyrolysis of the pelletizing of 4 embodiment of table 2
Embodiment 3
By the rock wool crushed and rubber powder according to 1:3 mass ratio is well mixed, and prepares compound binding agent, then will
Broken jet coal, quick lime is with the binding agent for preparing according to 1:1:0.35 mass ratio is mixed, it is to be mixed it is uniform after,
It is preheated to 300 DEG C to be heat-treated, pressure ball is carried out by high-pressure ball press, the compression strength such as institute of table 5 of pelletizing is generated after screening
Show, then pelletizing is put into pyrolysis oven, set destructive distillation final temperature as 900 DEG C, the residence time is 1.5 hours.After the completion of pyrolysis, take
The pelletizing gone out after pyrolysis carries out compression strength detection, and its compression strength is shown in Table 6.
The pelletizing compression strength of 5 embodiment of table 3 is detected
Compression strength detection after the pyrolysis of the pelletizing of 6 embodiment of table 3
Comparative example 1
Dross coal, the quick lime that will be crushed are according to 1:1 mass ratio is mixed, it is to be mixed it is uniform after, be preheated to 300
DEG C it is heat-treated, is molded by high-pressure ball press, the compression strength of pelletizing as shown in table 7, is then put after screening
Enter in pyrolysis oven, set destructive distillation final temperature as 900 DEG C, the residence time is 1.5 hours.After the completion of pyrolysis, the pelletizing after pyrolysis is taken out
Compression strength detection is carried out, its compression strength is averagely shown in Table 8.
The pelletizing compression strength of 7 comparative example of table 1 is detected
Compression strength detection after the pyrolysis of the pelletizing of 8 comparative example of table 1
Comparative example 2
Dross coal, quick lime, the bentonite that will be crushed are according to 1:1:0.35 mass ratio is mixed, to be mixed uniform
Afterwards, 300 DEG C are preheated to be heat-treated, pressure ball is carried out by high-pressure ball press, the compression strength that pelletizing is generated after screening is shown in Table 9
It is shown, then pelletizing is put into pyrolysis oven, set destructive distillation final temperature as 900 DEG C, 1.5 hours residence times.After the completion of pyrolysis, take
Pelletizing carries out compression strength detection after going out pyrolysis, the results are shown in Table shown in 10.
The cold ball compression strength inspection of 9 comparative example of table 2
Compression strength detection after the pyrolysis of the pelletizing of 10 comparative example of table 2
By the working condition and pressure resistance of pelletizing after cold ball resulting in embodiment 1~3 and comparative example 1~2 and pyrolysis
Degree is collected, as shown in table 11：
The compression strength detection of pelletizing collects after the cold ball of table 11 and pyrolysis
As can be seen from Table 11：Compression strength is obvious respectively after cold ball compression strength and the pelletizing pyrolysis of embodiment 1~3
Higher than compression strength after cold ball compression strength and the pelletizing pyrolysis of comparative example 1~2, therefore, what is be made up of rock wool and rubber is compound
The caking property of binding agent is substantially better than bentonite adhesive (comparative example 2).The compound binding agent that rock wool and rubber are constituted is in pelletizing
Compression strength is significantly lower than relative to the decline degree of cold ball compression strength and is not added with binding agent (comparative example 1) and swelling after pyrolysis
The compression strength of native binding agent (comparative example 2).
Claims (7)
1. a kind of method that application compound binding agent improves dross coal and quick lime mixing pelletizing elevated temperature strength, it is characterised in that
Including：(1) rock wool, rubber are crushed respectively, the product mixing after crushing obtains compound binding agent；(2) by dross coal, raw stone
Ash mixes after crushing with the compound binding agent, obtains compound；(3) compound is carried out into heat pre-treatment；(4) will heat pre-
Product after treatment carries out high-pressure molding treatment and forms molding materials again；(5) molding materials are carried out into screening process, obtains ball
Group；(6) pelletizing is pyrolyzed, is obtained the dross coal and quick lime mixing pelletizing of high compressive strength.
2. in accordance with the method for claim 1, it is characterised in that rock wool is crushed and makees pulverization process, to the grain of rock wool particle
Degree is less than 3mm；Rubber pulverizing is processed, the granularity to rubber grain is less than 1mm.
3. in accordance with the method for claim 1, it is characterised in that count in mass ratio, the ratio of rock wool and rubber is (1~3):
(2~4).
4. according to the method described in claim 1 or 2, it is characterised in that the rubber is heat curing-type rubber.
5. in accordance with the method for claim 1, it is characterised in that by dross coal, quick lime and compound binding agent in step (2)
According to 100:(90~120):The mass ratio of (15~35) is mixed.
6. in accordance with the method for claim 5, it is characterised in that the granularity after dross coal is crushed in step (2) is less than
0.15mm；Granularity after quick lime is crushed is less than 0.15mm.
7. in accordance with the method for claim 1, it is characterised in that the dross coal moisture is less than 5%.
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| CN201611035742.3A CN106833789A (en) | 2016-11-18 | 2016-11-18 | The method for improving dross coal and quick lime mixing pelletizing elevated temperature strength |
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| CN201611035742.3A CN106833789A (en) | 2016-11-18 | 2016-11-18 | The method for improving dross coal and quick lime mixing pelletizing elevated temperature strength |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205175A (en) * | 2019-06-18 | 2019-09-06 | 榆林学院 | A method of semi-coke moulded coal is prepared by binder of waste rubber |
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| CN110205175A (en) * | 2019-06-18 | 2019-09-06 | 榆林学院 | A method of semi-coke moulded coal is prepared by binder of waste rubber |
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Application publication date: 20170613 |