CN101831335A - Safety environment-friendly fuel and preparation technology thereof - Google Patents
Safety environment-friendly fuel and preparation technology thereof Download PDFInfo
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- CN101831335A CN101831335A CN200910119255A CN200910119255A CN101831335A CN 101831335 A CN101831335 A CN 101831335A CN 200910119255 A CN200910119255 A CN 200910119255A CN 200910119255 A CN200910119255 A CN 200910119255A CN 101831335 A CN101831335 A CN 101831335A
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Abstract
The invention relates to safety environment-friendly fuel and preparation technology thereof. The safety environment-friendly fuel comprises the following components in percentage by weight: 50-65 percent of waste coke powder, 10-20 percent of fly ash, 5-10 percent of anthracite, 2-5 percent of slag, 2-5 percent of high-heating-value waste slag, 5-9 percent of compounded curing agent and 10-14 percent of water. The preparation technology comprises the following steps: mixing the waste coke powder and the slag which are respectively ground and milled; adding the fly ash, the anthracite, the high-heating-value waste slag and the compounded curing agent and evenly mixing; and then adding the water and aging for 3-4 hours; and finally, forming the mixed material on a forming machine. The high-quality safety environment-friendly fuel is mainly prepared from low-cost byproducts of waste coke powder and fly ash by adding other combustible waste materials and the compounded curing agent and can replace the common coal product. The invention solves the problems of recycling utilization of waste materials and the problem of environment pollution caused by sulfur dioxide and carbon monoxide generated in the burning process of traditional coal products.
Description
Technical field
The present invention relates to a kind of fuel and preparation technology thereof, relate in particular to a kind of safety environment-friendly fuel and preparation technology thereof.
Background technology
In occupation of the status of outbalance, particularly along with the skyrocketing of crude oil and Gas Prices, the trend of growth appears to coal in the share of coal in fuel structure in industry and people's daily life.Moulded coal is a kind of energy saving and environment friendly coal-fired product, traditional moulded coal occupies the status of outbalance in industry and people's daily life, particularly along with the skyrocketing of the price of crude oil and Sweet natural gas, the share of coal in fuel structure has rising tendency, some areas even the out of stock phenomenon of moulded coal occurs.But there are shortcomings such as efficiency of combustion is low, environmental pollution big, poor safety performance in traditional moulded coal.Data show that sulfurous gas and flue dust in the national waste gas more than 90% come spontaneous combustion coal.For this reason, the environment-friendly type fuel of exploitation energy replacing fuel coal is very urgent.
On the other hand, China is as coal-fired big country, and the quantity discharged of annual flyash reaches about 300,000,000 tons, and the utilization of coal ash rate is also lower at present, and particularly the utilization of coal ash inferior of high carbon content (loss on ignition is higher than 10%) is a difficult problem always.In addition, China every year produces useless coke powder more than 4,000 ten thousand tons because of coal coking, and these useless coke powders fail to be utilized effectively always.The characteristics of coke powder are higher calorific value, low sulfur content.Owing to these coke powders of technical reason are not utilized effectively as yet, cause the huge wasting of resources.Useless coke powder and high-carbon fly ash plasticity are low, are difficult to moulding, must add binding agent.Coke powder and flyash all belong to lean property material, and is relatively more difficult during moulding.Although the skilled worker person of section has carried out number of research projects aspect the industrial shaping coal moulding, and obtain many achievements in research.But generally speaking, these technology more or less exist such or such deficiency, and are low as cold and hot state intensity, moistureproof and waterproof is poor, cost is too high, raw material sources are wide, combustionproperty is good or the like.Except above-mentioned two kinds of waste resources, a large amount of combustible waste material of the annual discharging of enterprises such as chemical industry, light industry, papermaking contains higher calorific value.Not only caused the waste of resource, these wastes produce pollution to atmosphere and water surrounding in varying degrees.Therefore, how effectively utilizing these low-value by-products is pendulum important topics in face of us.
Summary of the invention
The present invention is directed in the prior art that traditional coal briquette for civillan use exists still that efficiency of combustion is low, dust pollution and the relatively poor shortcoming of safety performance, the a large amount of combustible waste material utilization ratio of the annual discharging of enterprises such as flyash and two kinds of waste resources of coke powder and chemical industry, light industry, papermaking simultaneously is low, and atmosphere and water surrounding produced the deficiency of polluting, a kind of safety environment-friendly fuel and preparation technology thereof are provided.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of safety environment-friendly fuel, it is characterized in that, comprise 50%～65% useless coke powder, 10%～20% flyash, 5%～10% hard coal, 2%～5% slag, 2%～5% high heating value waste residue, 5%～9% composite curing agent and 10%～14% water by weight percentage.
The invention has the beneficial effects as follows: at the characteristics of useless coke powder and flyash, with two kinds of low-value by-products is main raw material, add other combustible waste materials, composite curing agent is made high-quality and safety environment-friendly type fuel to replace the coventional type product of coal, both solved the recycling problem of refuse, solved again in the traditional product of coal combustion processes and produced sulfurous gas, the pollution problem of carbon monoxide, simultaneously, by adding a small amount of composite curing agent, make the residue after the product burning have good gelling characteristic, can guarantee the cold of product, hot strength, can reduce the generation of dust again, achieve many things at one stroke.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the calorific value of described high heating value waste residue is greater than 2800kacl/kg.
Further, described high heating value waste residue is stalk, sawdust, furfural production waste residue or sugarcane bagasse.
Further, described composite curing agent by in inorganic non-metallic mineral, white lime, silicate, vitriol and the CF activity excitant at least three kinds form.
Further, described inorganic non-metallic mineral are calcium enriched cyclone-furnace slag or alloy slag.
Further, described silicate is water glass or potassium silicate.
Further, described vitriol is sodium sulfate or vitriolate of tartar.
The present invention also provides a kind of technical scheme that solves the problems of the technologies described above as follows: a kind of preparation technology of safety environment-friendly fuel, and this preparation technology may further comprise the steps:
Step 1, get the slag of 50%～65% useless coke powder and 2%～5% and pulverize levigate by weight percentage;
Step 2, get 10%～20% flyash, 5%～10% hard coal, 2%～5% high heating value waste residue, 5%～9% composite curing agent by weight percentage and mix, and mix in the useless coke powder that will pulverize and the slag adding mixture;
Step 3, get 10%～14% water by weight percentage and added behind the compound that mixes ageing 3 hours～4 hours;
Step 4, the moulding on shaper of the compound after the ageing can be made safety environment-friendly fuel.
Further, it is 2%～10% to tailing over by 100 purposes that the useless coke powder in the described step 1 is pulverized levigate, and the slag powders comminution is thin to be 1%～4% to tailing over by 180 purposes.
Further, the high heating value waste residue in the described step 2 is a stalk, stalk with need to be crushed to granularity less than 1 millimeter before other components are mixed.
Description of drawings
Fig. 1 is the preparation technology's of safety environment-friendly fuel of the present invention schematic flow sheet.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and feature are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
Fig. 1 is the preparation technology's of safety environment-friendly fuel of the present invention schematic flow sheet.As shown in Figure 1, this preparation technology may further comprise the steps:
It is 2%～10% to tailing over by 100 purposes that described useless coke powder is pulverized levigate, and the slag powders comminution is thin to be 1%～4% to tailing over by 180 purposes.Described useless coke fines size is thin more, and surface-area and contact area increase, and have increased force of cohesion, and the ultimate compression strength behind the combust molding is improved.But granularity is meticulous, can increase tooling cost.The granularity of flyash is generally thinner, can not handle.Test-results shows that useless coke powder fineness is advisable with 80 orders.
Described high heating value waste residue is that stalk, sawdust, furfural are produced waste residue or sugarcane bagasse, perhaps the mixture of several compositions wherein.
Described composite curing agent by in inorganic non-metallic mineral, white lime, silicate, vitriol and the CF activity excitant at least three kinds form.Described inorganic non-metallic mineral are calcium enriched cyclone-furnace slag or alloy slag, the perhaps mixture of two kinds of compositions.Described silicate is water glass or potassium silicate.Described vitriol is sodium sulfate or vitriolate of tartar.
In the present embodiment, described high heating value waste residue is a stalk, stalk with need to be crushed to granularity less than 1 millimeter before other components are mixed.
In the present embodiment, described composite curing agent comprises white lime, potassium silicate and vitriolate of tartar, described white lime by weight percentage, its weight percent is 3%～5%; Described potassium silicate by weight percentage, its weight percent is 0.5%～3%; Described vitriolate of tartar by weight percentage, its weight percent is 0.5%～1%.
Step 40, the moulding on shaper of the compound after the ageing can be made safety environment-friendly fuel.
Behind useless coke powder and flyash and the composite curing agent uniform mixing, its plasticity-improves greatly, elasticity significantly reduces, and helps compression moulding.Pressure has material impact to molding effect.Hypertonia, degree of compactness and initial strength improve, but can influence porosity, cross and hang down then not easy-formation.The practice of trial production of this product proves that the normal cellular coal machine of employing 160kN can satisfy the specification of quality of product.
All refer to total weight percent by weight percentage in described step 10～step 40 by safety environment-friendly fuel.The order of described step 10 and step 20 can be put upside down, and promptly can get flyash, hard coal, high heating value waste residue and composite curing agent earlier and mix, and gets useless coke powder and slag again and pulverizes levigate adding mixture.
Composite curing agent of the present invention had both improved the processability of fuel, can not produce obnoxious flavour again in the combustion processes.Useless coke powder and fly ash grain surface irregularity, uneven, some surface is porousness, (stirs, pushes) under external force, because the effect of Van der Waals force makes coke powder particle and fly ash grain combine with solidifying agent.In addition,,, fully excite flyash, scoriaceous activity, make it to produce aquation to a certain degree by the compound action of chemi-excitation-physical excitation based on the steam-cured fly ash brick production technology, hydrated product be formed with intensity and the water resistance that helps improve product.Simultaneously, the visco-plasticity of system improves greatly behind the adding composite curing agent, helps moulding.In the presence of inorganic non-metallic mineral, white lime and CF activity excitant etc., flyash is at the vitreous structure that can generate a small amount of rich calcium (for the low calcium fly ash of original state) in the high-temp combustion process in the fuel, and the residue after the burning has hydration activity preferably.This residue has certain intensity, is difficult for efflorescence, has vital role for the generation that reduces dust.
Divide three embodiment that the preparation technology of safety environment-friendly fuel of the present invention is described in further detail below.
Embodiment one:
At first, get 50 kilograms crushed stalk to granularity less than 1 millimeter, standby; Then, get the slag of 540 kilograms useless coke powder and 50 kilograms and pulverize levigate; Then, get 200 kilograms flyash, 50 kilograms hard coal, 70 kilograms composite curing agent mixing, and mix in the useless coke powder that will pulverize, slag and the stalk adding mixture, wherein composite curing agent comprises 40 kilograms white lime, 20 kilograms potassium silicate and 10 kilograms vitriolate of tartar; Then, get 130 kilograms water and added behind the compound mix ageing 3 hours; At last, the moulding on shaper of the compound after the ageing can be made safety environment-friendly fuel.
Embodiment two:
At first, get 35 kilograms crushed stalk to granularity less than 1 millimeter, standby; Then, get the slag of 500 kilograms useless coke powder and 50 kilograms and pulverize levigate; Then, get 200 kilograms flyash, 50 kilograms hard coal, 70 kilograms composite curing agent mixing, and mix in the useless coke powder that will pulverize, slag and the stalk adding mixture, wherein composite curing agent comprises 40 kilograms white lime, 20 kilograms potassium silicate and 10 kilograms vitriolate of tartar; Then, get 120 kilograms water and added behind the compound mix ageing 3 hours; At last, the moulding on shaper of the compound after the ageing can be made safety environment-friendly fuel.
Embodiment three:
At first, get 35 kilograms crushed stalk to granularity less than 1 millimeter, standby; Then, get the slag of 450 kilograms useless coke powder and 50 kilograms and pulverize levigate; Then, get 200 kilograms flyash, 50 kilograms hard coal, 70 kilograms composite curing agent mixing, and mix in the useless coke powder that will pulverize, slag and the stalk adding mixture, wherein composite curing agent comprises 40 kilograms white lime, 20 kilograms potassium silicate and 10 kilograms vitriolate of tartar; Then, the water of getting double centner added behind the compound mix ageing 3 hours; At last, the moulding on shaper of the compound after the ageing can be made safety environment-friendly fuel.
As shown in table 1, be the result that the key technical indexes of the safety environment-friendly fuel that makes by above-mentioned three embodiment is tested.
The key technical indexes test chart of the safety environment-friendly fuel that table 1 makes by three embodiment
As can be seen from the above table, the density of safety environment-friendly fuel of the present invention is low by about 25% than the normal cellular coal, and its total sulfur content is well below the normal cellular coal.Safety environment-friendly fuel of the present invention is not soaking 24 defeated and dispersedly after little, and the normal cellular coal is defeated and dispersed fully, this shows that safety environment-friendly fuel of the present invention has excellent water tolerance and moisture-proof function.
As shown in table 2, for the safety environment-friendly fuel that makes by above-mentioned three embodiment being carried out the test result of combustibility test.
The combustionproperty test chart of the safety environment-friendly fuel that table 2 makes by three embodiment
| Embodiment 1 | Embodiment 2 | Embodiment 3 | The normal cellular coal | |
| Igniting difficulty or ease/min | ??11.0 | ??11.5 | ??12.5 | ??19.0 |
| Embodiment 1 | Embodiment 2 | Embodiment 3 | The normal cellular coal | |
| Speed/min gets angry | ??24.2 | ??25.8 | ??26.0 | ??38.6 |
| Intensity of fire/gmin -1 | ??21.1 | ??19.6 | ??18.2 | ??14.2 |
| Fuel availability/g water g fuel -1 | ??3.85 | ??3.92 | ??3.86 | ??3.37 |
| CO content/% in the waste gas of burning back | Do not detect | Do not detect | Do not detect | Not test |
As can be seen from the above table, safety environment-friendly fuel of the present invention is much better than the normal cellular product of coal aspect main burning indexs such as igniting difficulty or ease, the speed of getting angry, intensity of fire and fuel availability, do not detect CO in the waste gas after burning.
Above test result shows, with normal cellular coal facies ratio, safety environment-friendly fuel of the present invention have heat imitate good, igniting is fast, light weight, less energy consumption, little, the low cost and other advantages of pollution.
After tested, the total sulfur content of safety environment-friendly fuel of the present invention is extremely low, obviously is being better than the normal cellular coal aspect main burning such as ignition characteristic, the speed of getting angry, intensity of fire and the fuel availability index, and is having excellent water tolerance and moisture-proof function.The present invention has realized the reasonable utilization of useless coke powder of low value and part flyash inferior, and by adding a small amount of high-quality bituminous coal, stalk etc., has solved the environmental pollution and the inefficient combustion problem of present coventional type product of coal.By adding the CF activity excitant, excite the activity of flyash, make to have certain hydration activity before and after the fuel combustion, thereby product has certain intensity before and after burning, burning back dust is less.Can be used for replacing the steam coal of traditional coal briquette for civillan use, part industrial enterprise, the dwarf boiler coal of central heating unit, have application promise in clinical practice and huge promotional value.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. safety environment-friendly fuel, it is characterized in that, comprise 50%～65% useless coke powder, 10%～20% flyash, 5%～10% hard coal, 2%～5% slag, 2%～5% high heating value waste residue, 5%～9% composite curing agent and 10%～14% water by weight percentage.
2. safety environment-friendly fuel according to claim 1 is characterized in that the calorific value of described high heating value waste residue is greater than 2800kacl/kg.
3. safety environment-friendly fuel according to claim 2 is characterized in that, described high heating value waste residue is stalk, sawdust, furfural production waste residue or sugarcane bagasse.
4. safety environment-friendly fuel according to claim 1 is characterized in that, described composite curing agent by in inorganic non-metallic mineral, white lime, silicate, vitriol and the CF activity excitant at least three kinds form.
5. safety environment-friendly fuel according to claim 4 is characterized in that, described inorganic non-metallic mineral are calcium enriched cyclone-furnace slag or alloy slag.
6. safety environment-friendly fuel according to claim 4 is characterized in that, described silicate is water glass or potassium silicate.
7. safety environment-friendly fuel according to claim 4 is characterized in that, described vitriol is sodium sulfate or vitriolate of tartar.
8. the preparation technology of a safety environment-friendly fuel is characterized in that, this preparation technology may further comprise the steps:
Step 1, get the slag of 50%～65% useless coke powder and 2%～5% and pulverize levigate by weight percentage;
Step 2, get 10%～20% flyash, 5%～10% hard coal, 2%～5% high heating value waste residue, 5%～9% composite curing agent by weight percentage and mix, and mix in the useless coke powder that will pulverize and the slag adding mixture;
Step 3, get 10%～14% water by weight percentage and added behind the compound that mixes ageing 3 hours～4 hours;
Step 4, the moulding on shaper of the compound after the ageing can be made safety environment-friendly fuel.
9. the preparation technology of safety environment-friendly fuel according to claim 8 is characterized in that, it is 2%～10% to tailing over by 100 purposes that the useless coke powder in the described step 1 is pulverized levigate, and the slag powders comminution is thin to be 1%～4% to tailing over by 180 purposes.
10. the preparation technology of safety environment-friendly fuel according to claim 8 is characterized in that, the high heating value waste residue in the described step 2 is a stalk, stalk with need to be crushed to granularity less than 1 millimeter before other components are mixed.
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| CN200910119255A CN101831335A (en) | 2009-03-10 | 2009-03-10 | Safety environment-friendly fuel and preparation technology thereof |
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| CN200910119255A CN101831335A (en) | 2009-03-10 | 2009-03-10 | Safety environment-friendly fuel and preparation technology thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107400543A (en) * | 2012-01-26 | 2017-11-28 | 谐和能源有限责任公司 | Alleviate unwanted combustion emission using the adsorbent containing engineering fuel feedstocks |
| US10611974B2 (en) | 2008-06-26 | 2020-04-07 | Accordant Energy, Llc | Engineered fuel feed stock |
| CN111333373A (en) * | 2018-12-18 | 2020-06-26 | 中山市和合环保科技有限公司 | Composite reagent for resource treatment of waste mineral oil or waste containing waste mineral oil |
| CN112608777A (en) * | 2020-10-27 | 2021-04-06 | 安徽钢研新材料科技有限公司 | Waste coke powder bonded recycled fuel and preparation method thereof |
| CN114507553A (en) * | 2020-11-17 | 2022-05-17 | 上海梅山钢铁股份有限公司 | Mixed fuel with high coal-coke replacement ratio for blast furnace injection and preparation method thereof |
-
2009
- 2009-03-10 CN CN200910119255A patent/CN101831335A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10611974B2 (en) | 2008-06-26 | 2020-04-07 | Accordant Energy, Llc | Engineered fuel feed stock |
| CN107400543A (en) * | 2012-01-26 | 2017-11-28 | 谐和能源有限责任公司 | Alleviate unwanted combustion emission using the adsorbent containing engineering fuel feedstocks |
| CN111333373A (en) * | 2018-12-18 | 2020-06-26 | 中山市和合环保科技有限公司 | Composite reagent for resource treatment of waste mineral oil or waste containing waste mineral oil |
| CN112608777A (en) * | 2020-10-27 | 2021-04-06 | 安徽钢研新材料科技有限公司 | Waste coke powder bonded recycled fuel and preparation method thereof |
| CN114507553A (en) * | 2020-11-17 | 2022-05-17 | 上海梅山钢铁股份有限公司 | Mixed fuel with high coal-coke replacement ratio for blast furnace injection and preparation method thereof |
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Application publication date: 20100915 |