CN105950242A - Composite binder for forming formed coke, formed coke and preparation method of formed coke - Google Patents
Composite binder for forming formed coke, formed coke and preparation method of formed coke Download PDFInfo
- Publication number
- CN105950242A CN105950242A CN201610377685.0A CN201610377685A CN105950242A CN 105950242 A CN105950242 A CN 105950242A CN 201610377685 A CN201610377685 A CN 201610377685A CN 105950242 A CN105950242 A CN 105950242A
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- CN
- China
- Prior art keywords
- formed coke
- binding agent
- compound binding
- semicoke
- coke
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- 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.)
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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
- C10L5/06—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
- C10L5/105—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with a mixture of organic and inorganic binders
Abstract
The invention discloses a composite binder for forming formed coke, the forming coke containing the composite binder and a preparation method of the formed coke. The composite binder provided by the invention is prepared from coal slime, bentonite, cationic starch and calcium hydroxide powder, wherein the mass ratio of the components is (2 to 15) to (5 to 40) to (0.5 to 10) to (2 to 15). All the raw materials of the composite binder provided by the invention are solid, so the raw materials are convenient to use. In addition, the raw materials of the composite binder are wide in source, so the raw materials are low in price. The formed coke prepared from semicoke generated by quickly pyrolyzing the composite binder and brown coal has the advantages of good strength, and convenience for storage, transportation and use. The method for preparing the formed coke, provided by the invention, is very simple and convenient and is easy for industrial popularization and application.
Description
Technical field
The invention belongs to briquetting field, be particularly used for formed coke molding compound binding agent,
Formed coke and preparation method thereof.
Background technology
Coal fast pyrogenation refers to put into coal dust in the rapid pyrolysis apparatus of uniform temperature, the shortest
Time in high temperature pyrolysis, coal dust organic composition become gas or coal tar, fixed carbon
Become the process of semicoke.Coal fast pyrogenation can produce a large amount of powder semicoke, and powder semicoke is relatively
Difficulty is directly burnt utilization, and more difficult molding, needs to add binding agent and is made into after formed coke profit again
With.
Summary of the invention
It is an object of the invention to provide a kind of answering for formed coke molding with low cost, easy to use
Close binding agent.Based on this, the present invention further provides a kind of type comprising this compound binding agent
Burnt and preparation method thereof.
According to the present invention, first provide a kind of compound binding agent for formed coke molding, including coal slime,
Bentonite, cationic starch and calcium hydroxide powder；Described coal slime, bentonite, cationic starch and
The mass ratio of calcium hydroxide powder is: 2-15:5-40:0.5-10:2-15.
Preferably, the quality of described coal slime, bentonite, cationic starch and calcium hydroxide powder
Ratio is: 5-10:5-30:0.5-5:3-10.
Further, the moisture≤10wt% of described coal slime.
The present invention also provides for a kind of semicoke produced by above-mentioned compound binding agent and Rapid-pyrolysis
The formed coke made.
Further, in above-mentioned formed coke, the mass ratio of semicoke and compound binding agent is 1:0.1-0.3.
Further, in above-mentioned formed coke, the particle size≤3mm of described semicoke.
The present invention also provides for a kind of method preparing above-mentioned formed coke, including:
Step 1, adds compound binding agent in semicoke, obtains mixture A after stirring；
Step 2, adds water in described mixture A, obtains mixture B after stirring；
Step 3, puts in former compressing by described mixture B.
Further, in above-mentioned preparation method, mixture A and the mass ratio 1:0.2-0.4 of water.
Further, in above-mentioned preparation method, the time being stirred in step 1 is 5-15 minute,
Preferably mixing time is 10 minutes；The time being stirred in step 4 is 5-15 minute, excellent
The mixing time of choosing is 10 minutes.
Additionally, in above-mentioned preparation method, the pressure of described former is 10-13MPa.
The raw material of the compound binding agent that the present invention provides is solid, easy to use.Additionally, it is compound
The raw material sources of binding agent are extensive, thus cheap.What the present invention provided uses this compound binding agent
Good with the formed coke intensity made of semicoke that Rapid-pyrolysis produces, convenient storage, transport and
Use.The method preparing this formed coke that the present invention provides is the easiest, easy industrial application.
Accompanying drawing explanation
Fig. 1 is the process chart preparing formed coke in the embodiment of the present invention.
Detailed description of the invention
Illustrate embodiments of the invention below in conjunction with the accompanying drawings, illustrate the present invention with more readily apparent.
Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiment.
Based on embodiments of the invention, those of ordinary skill in the art are not paying the premise of creative work
Lower obtained every other embodiment, broadly falls into the scope of protection of the invention.
The present invention discloses a kind of compound binding agent for formed coke molding, including coal slime, bentonite,
Cationic starch and calcium hydroxide powder；Described coal slime, bentonite, cationic starch and calcium hydroxide
The mass ratio of powder is: 2-15:5-40:0.5-10:2-15.
Preferably, the mass ratio of described coal slime, bentonite, cationic starch and calcium hydroxide powder is:
5-10:5-30:0.5-5:3-10.
Coal slime be in coal production process produce garbage, granularity is little, moisture is high and glutinous
Degree is relatively big, containing a small amount of coal dust.Bentonite is inorganic binder conventional in briquetting field,
Good hydrophilic property, cohesive force are strong, low cost, with negative charge, high adsorption capacity.Cationic starch
It is a kind of derivant of starch, with positive charge, has certain viscosity, high adsorption capacity.Sun from
The adsorption that can send out strong between sub-starch and bentonite, forms poly-network, strengthening bonding effect
Really.Calcium hydroxide easily generates calcium carbonate with carbon dioxide reaction after meeting water, can improve final preparing
The intensity of formed coke.
Inventor finds through substantial amounts of experiment, coal slime, bentonite, cationic starch and hydroxide
The mass ratio of calcium powder is: during 2-15:5-40:0.5-10:2-15, the intensity of the formed coke finally prepared
Demand can be met.Inventor also finds, coal slime, bentonite, cationic starch and calcium hydroxide powder
Mass ratio be: during 5-10:5-30:0.5-5:3-10, the intensity of formed coke finally prepared is more preferable.
Although the price of the raw material cationic starch of the compound binding agent of the present invention is more expensive, but its consumption is very
Few, on the whole, the compound binding agent that the present invention provides is cheap.
Further, the moisture≤10wt% of described coal slime.
In the present invention, the moisture of coal slime is not required to be particularly limited to.But moisture is the highest,
The most bad storage, transport and use.Inventor finds, during the moisture≤10wt% of coal slime,
More convenient use.
Embodiments provide and a kind of produced by above-mentioned compound binding agent and Rapid-pyrolysis
The formed coke that semicoke is made.
The formed coke that the present invention provides is made up of above-mentioned compound binding agent, and intensity is good, and low cost.
The quality of formed coke of the present invention is mainly evaluated by its drop resistant intensity, comprcssive strength.Drop resistant is strong
Degree be formed coke fall under prescribed conditions and be hit power time crush resistance energy；Comprcssive strength refers to
The anti-extrusion ability with impact of formed coke.In the present invention, the test main points of the drop resistant intensity of formed coke are: take
10 samples weighings, are contained in the openable chest of bottom, open case in liftoff 2.0m eminence
The end, allow sample free-electron model on steel plate thick for 12mm, after repeatedly falling three times, sieve with sieve
Point, take respectively > 5mm and > percetage by weight of 13mm is as the index (knot of the drop resistant intensity of formed coke
Represent with M5 and M13 respectively in Guo).In the present invention, the assay method of the comprcssive strength of formed coke is:
It is on LDS-Y10A formed coke pressure testing machine that formed coke is placed in model, executes load speed at pressure testing machine
Degree is for testing under conditions of 10mm/min.
Further, in above-mentioned formed coke, the mass ratio of semicoke and compound binding agent is 1:0.1-0.3.
In the present invention, semicoke is not required to be particularly limited to the mass ratio of compound binding agent, but typically
For, the consumption of binding agent very little, the insufficient strength of formed coke prepared, the highest meeting of consumption of binder
Waste binding agent, increases the cost of formed coke.Inventor finds, semicoke and the quality of compound binding agent
Than during for 1:0.1-0.3, the intensity of prepared formed coke can meet demand.
Further, in above-mentioned formed coke, the particle size≤3mm of described semicoke.
In the present invention, the particle size of semicoke is not required to be particularly limited to.The size of semicoke is the least,
Specific surface area is the biggest, and the combination with binding agent is the best, and intensity is the best, but its cost prepared is the highest.
Inventor finds through substantial amounts of experiment, during the particle size≤3mm of semicoke, both can guarantee that formed coke
Quality, and the cost preparing semicoke is the highest.
The method preparing above-mentioned formed coke in the embodiment of the present invention, as it is shown in figure 1, include:
Step 1, adds compound binding agent in semicoke, obtains mixture A after stirring；
Step 2, adds water in described mixture A, obtains mixture B after stirring；
Step 3, puts in former compressing by described mixture B.
The method preparing above-mentioned formed coke that the present invention provides is the easiest, it is easy to popularization and application.
Further, in above-mentioned preparation method, mixture A and the mass ratio 1:0.2-0.4 of water.
In the present invention, the addition of water is not required to be particularly limited to.But the addition of water is very little, multiple
The effect closing binding agent is not ideal；The addition of water is too many, and the formed coke prepared can be caused to contain greatly
Amount moisture, not easy-formation, and drying time is long.Inventor finds, mixture A and the matter of water
When amount is than 1:0.2-0.4, the molding effect of final formed coke is preferable.
Further, in above-mentioned preparation method, the time being stirred in step 1 is 5-15 minute,
Preferably mixing time is 10 minutes；The time being stirred in step 4 is 5-15 minute, excellent
The mixing time of choosing is 10 minutes.
In the preparation method of the formed coke that the present invention provides, the time of stirring all need not be particularly limited to.
It is, in general, that the longest mixed effect of mixing time is the best, but the most also can increase time and equipment
The cost run.Inventor finds, in above-mentioned preparation method, stirs in step 1 and step 4
The time mixed is proper when being 5-15 minute；When being 10 minutes between upon agitation, the effect of stirring
The most best.
Additionally, in above-mentioned preparation method, the pressure of described former is 10-13MPa.
In the present invention, the pressure of former is not required to be particularly limited to.Inventor is through substantial amounts of
Experiment finds, the pressure of former is when 10-13MPa, and the intensity of prepared formed coke is good, and
And the less energy consumption of equipment, be lost little.
Embodiment 1
First, compound binding agent is prepared.By coal slime, bentonite, cationic starch, calcium hydroxide
Powder mix homogeneously, prepares compound binding agent.Wherein, the moisture of coal slime is 10wt%.By with
Lower weight portion weighs coal slime, bentonite, cationic starch, calcium hydroxide powder respectively:
Coal slime 5 parts, bentonite 10 parts, cationic starch 0.5 part, calcium hydroxide powder 3 parts.
Then, semicoke is prepared.Brown coal crushing is become powder, carries out fast pyrogenation, it is thus achieved that semicoke.Take
The semicoke of 185 parts of particle size≤3mm is standby.
Prepare 40.7 parts of water.
Compound binding agent is added in semicoke, stir 5 minutes (stirring for the first time), the most thereto
Add water, be stirred for 5 minutes (second time stirring), finally put it into molding in former,
Prepare formed coke.
Its drop resistant intensity and comprcssive strength is detected after being dried by formed coke.It is given in Table 1 detection knot
Really.
Embodiment 2
Repeat the step of embodiment 1 by each raw material specified in table 1 below, list in Table 1
Test result.
Embodiment 3
Repeat the step of embodiment 1 by each raw material specified in table 1 below, list in Table 1
Test result.
Embodiment 4
Repeat the step of embodiment 1 by each raw material specified in table 1 below, list in Table 1
Test result.
Embodiment 5
Repeat the step of embodiment 1 by each raw material specified in table 1 below, list in Table 1
Test result.
Table 1
As can be seen from Table 1, drop resistant intensity M5 of the pelletizing that the embodiment cited by the present invention is prepared
Being all higher than 80%, M13 is all higher than 60%, and comprcssive strength is all higher than 200N.As can be seen here, the present invention
The compound binding agent bond effect provided is good, and the pelletizing prepared is readily transported, stores.
To sum up, it can be deduced that, the compound binding agent that the present invention provides is easy to use, cheap.
The formed coke intensity that the semicoke that this compound binding agent and Rapid-pyrolysis produce is made is good, convenient
Store, transport and use.The method preparing this formed coke that the present invention provides is the easiest, easy work
Industry popularization and application.
Again illustrate, the foregoing is only embodiments of the invention, not thereby limit the patent of the present invention
Scope, every equivalent structure utilizing description of the invention to be made or equivalence flow process conversion, the most each reality
Execute be combineding with each other of technical characteristic between example, or be directly or indirectly used in other relevant technical fields,
The most in like manner it is included in the scope of patent protection of the present invention.
Claims (10)
1. for the compound binding agent of formed coke molding, including coal slime, bentonite, sun from
Sub-starch and calcium hydroxide powder；Described coal slime, bentonite, cationic starch and hydroxide
The mass ratio of calcium powder is: 2-15:5-40:0.5-10:2-15.
Compound binding agent for formed coke molding the most according to claim 1, its feature
Being, the mass ratio of described coal slime, bentonite, cationic starch and calcium hydroxide powder is:
5-10:5-30:0.5-5:3-10.
Compound binding agent for formed coke molding the most according to claim 1, its feature
It is, the moisture≤10wt% of described coal slime.
4. a formed coke, described formed coke is made up of semicoke and compound binding agent, it is characterised in that
Described semicoke is the powder that Rapid-pyrolysis produces；Described compound binding agent is that right is wanted
Seek the compound binding agent described in any one of 1-3.
Formed coke the most according to claim 4, it is characterised in that described semicoke is with described
The mass ratio of compound binding agent is 1:0.1-0.3.
6. according to the formed coke described in claim 4, it is characterised in that the granule chi of described semicoke
Very little≤3mm.
7. the preparation method of arbitrary formed coke in a kind such as claim 4-6, it is characterised in that
Said method comprising the steps of:
Step 1, adds compound binding agent in semicoke, obtains mixture A after stirring；
Step 2, adds water in described mixture A, obtains mixture B after stirring；
Step 3, puts in former compressing by described mixture B.
The preparation method of formed coke the most according to claim 7, it is characterised in that described
Mixture A is 1:0.2-0.4 with the mass ratio of water.
The preparation method of formed coke the most according to claim 7, it is characterised in that step
The time being stirred in 1 is 5-15 minute, and preferred mixing time is 10 minutes；Step
The time being stirred in rapid 4 is 5-15 minute, and preferred mixing time is 10 minutes.
The preparation method of formed coke the most according to claim 7, it is characterised in that
The pressure of described former is 10-13MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610377685.0A CN105950242A (en) | 2016-05-31 | 2016-05-31 | Composite binder for forming formed coke, formed coke and preparation method of formed coke |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610377685.0A CN105950242A (en) | 2016-05-31 | 2016-05-31 | Composite binder for forming formed coke, formed coke and preparation method of formed coke |
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| CN105950242A true CN105950242A (en) | 2016-09-21 |
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Cited By (2)
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| CN106753650A (en) * | 2016-12-21 | 2017-05-31 | 北京神雾环境能源科技集团股份有限公司 | A kind of preparation method of formed coke |
| CN107083250A (en) * | 2017-06-15 | 2017-08-22 | 霍林郭勒市嘉华能源技术开发有限公司 | A kind of clean charcoal for roasting preparation method of lignite base semicoke |
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