CN103060041B - Briquette containing composite binder and burning synergistic agent and preparation method thereof - Google Patents
Briquette containing composite binder and burning synergistic agent and preparation method thereof Download PDFInfo
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- CN103060041B CN103060041B CN201310026929.7A CN201310026929A CN103060041B CN 103060041 B CN103060041 B CN 103060041B CN 201310026929 A CN201310026929 A CN 201310026929A CN 103060041 B CN103060041 B CN 103060041B
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Abstract
The invention discloses a briquette containing a composite binder and a burning synergistic agent. The briquette contains raw material components of coal powder, the composite binder and the burning synergistic agent, wherein the composite binder comprises pregelatinized starch, clay and polyvinyl alcohol; and the burning synergistic agent comprises potassium permanganate, sodium chloride and sodium carbonate. The briquette has the advantages of being easy to burn, high in cold-hot strength, high in heat efficiency, little in equipment investment, low in production cost, friendly to environment and the like.
Description
Technical field
The present invention relates to Coal dressing technical field, be specifically related to a kind of moulded coal containing compound binding agent and combustion synergist and preparation method thereof.
Background technology
Moulded coal refers to suitable technology and equipment, by having, the fine coal that certain particle size forms is shaped, size, intensity and physicochemical property artificial " lump coal ' '.Moulded coal has that technique is simple, less investment, cost are low, and can obtain and promote coal-fired quality, improve efficiency of combustion, reduce the advantages such as coal burning pollution, therefore as fuel, in people's daily life and industrial production, is used widely.
Since the late 19th century, the development experience of shaped coal technology three phases: (1) is fine coal briquetting simply, (2) coal powder formation modification, the burning of the broadened application of (3) moulded coal and high-efficiency cleaning.Although through long-term development, shaped coal technology has developed to obtain comparative maturity, along with continuing to increase of dynamics implemented in world's energy-conserving and environment-protective action, new demand is also arisen at the historic moment, and people proceed to improve and innovation to shaped coal technology.As the application number Chinese invention patent that is 200910263965.9, a kind of composite briquette and preparation method thereof is disclosed, this moulded coal is made by the raw material of following weight: coal 30-45% in washing, coal slime 30-45%, spoil 10-20%, composite assistant 4-8%, water 10-14%, described composite assistant is to be made by following raw materials according: calcium lignin sulphonate, SODIUM PHOSPHATE, MONOBASIC, Calcium Carbide Ash, magnesium chloride, ammonium humate, calcium hydroxide, saltpetre, potassium permanganate, SODIUMNITRATE, sodium-chlor, kaolin, the castor seeds dregs of fat, polyvinyl alcohol, water, it is low that this moulded coal has facility investment, under-20 degrees Celsius of temperature, also can normally produce, the moulded coal of making is without oven dry, cold strength is large, easy firing, smoke effect can reach the advantages such as 70-90%.Application number is 2009100074502.8 Chinese invention patent, a kind of industrial shaping coal and preparation method thereof is disclosed, this moulded coal component is counted by weight: coal 90-98, binding agent 0.25-1.0, linking agent 0.0025-0.01, hot-setter 1.5-8, water-resisting agent 0.25-0.65, preparation method is simple for this moulded coal, consumption of binder used is few, suitability is strong, has the advantages such as dry wet tenacity is high, water resistance good, Heat stability is good.But these improve, still fail to meet the specification of quality of people to moulded coal, therefore still need development of new moulded coal, improve shaped coal technology, to solve the existing problem of existing moulded coal.
Summary of the invention
The object of the invention is the defect existing for prior art moulded coal, provide a kind of and can make that moulded coal is inflammable, calorific value is large, thermo-efficiency is high, cinder residual quantity is little, harmful gas emission is low, cold and hot intensity is high, thermostability is high, water resistance is good, with low cost, production technique is simply containing moulded coal of compound binding agent and combustion synergist and preparation method thereof.
The technical solution adopted in the present invention is as follows:
A kind of moulded coal containing compound binding agent and combustion synergist, containing coal dust, compound binding agent and combustion synergist material component, described compound binding agent comprises pre-gelatinized starch, clay and polyvinyl alcohol, and described combustion synergist comprises potassium permanganate, sodium-chlor and sodium carbonate.
Described pre-gelatinized starch viscosity is high, bond effect good, can improve the cold physical strength of moulded coal, plays binding agent effect; Described clay acid and alkali-resistance, toughness, high temperature resistant, can improve hot compressive strength and the high-temperature stability of moulded coal, and can improve the comprehensive functions such as ash fusion point; Described polyvinyl alcohol has stronger water resistance, plays water-resisting agent; Described potassium permanganate is oxygenant, can under differing temps, decompose, and makes coal fully burning under differing temps; Described sodium-chlor plays " explosion " effect, makes the swollen loose loose burning of further strengthening in coal seam; Described sodium carbonate is sulphur-fixing agent, in addition can also deodorizing, eliminate crock, thus increase substantially boiler thermal output and coal saving rate, effectively protection of the environment.Moulded coal formula of the present invention is reasonable, adds after above-mentioned compound binding agent and combustion synergist in coal dust, and plasticity-, adaptability strengthen, and in production, coal dust used can be various feed coals, as: brown coal, bituminous coal, hard coal etc.
The above is containing the moulded coal of compound binding agent and combustion synergist, and the weight part ratio of described material component is preferably: coal dust 85-95 part, pre-gelatinized starch 1.5-5.5 part, clay 2.9-7.5 part, polyvinyl alcohol 0.3-1 part, potassium permanganate 0.015-0.05 part, sodium-chlor 0.27-0.90 part, sodium carbonate 0.015-0.05 part.
The above is containing the moulded coal of compound binding agent and combustion synergist, one or more combinations in the preferred kaolin of described clay, refractory mortar and wilkinite.
The above,, containing the preparation method of compound binding agent and combustion synergist moulded coal, comprises following operation steps:
1. according to the weight percent of material component, take respectively: coal dust, pre-gelatinized starch, clay, polyvinyl alcohol, potassium permanganate, sodium-chlor, sodium carbonate;
2. the water that accounts for material component gross weight 8-12% is added in reactor, adds polyvinyl alcohol, be heated to 80-95 ℃, stir and to make to dissolve completely, then add potassium permanganate respectively, sodium-chlor, sodium carbonate, stir and make to dissolve completely, obtain mixing solutions;
3. pre-gelatinized starch and clay are mixed, obtain mixture;
4. mixing solutions and mixture are added in coal dust, be uniformly mixed, coldmoulding, naturally places or dries, and obtains.
The above is containing the preparation method of compound binding agent and combustion synergist moulded coal, and the weight part ratio of described material component is preferably: coal dust 85-95 part, pre-gelatinized starch 1.5-5.5 part, clay 2.9-7.5 part, polyvinyl alcohol 0.3-1 part, potassium permanganate 0.015-0.05 part, sodium-chlor 0.27-0.90 part, sodium carbonate 0.015-0.05 part.
The invention has the beneficial effects as follows:
1. the present invention is applicable to the various coals such as brown coal, hard coal, bituminous coal, strong adaptability, raw material abundance, and facility investment is few, and production cost is low.
2. the consumption of the present invention's compound binding agent used and combustion synergist is few, and total amount can be low to moderate 5%, and moulded coal ash content is reduced relatively, and calorific value increases relatively, and thermo-efficiency is high.
3. the present invention has adopted synergistic agent, make Combustion of Mould Coal abundant, improve thermal value, thereby its thermo-efficiency is higher, harmful gas emission obviously declines, cinder less residue, thereby reduced environmental pollution, this moulded coal easy firing, firepower are large, can utilize low grade coal, and with low cost, use this product to make the utilization ratio of fuel improve 18～25%, harmful gas emission reduces more than 40%.
4. the present invention adopts compound binding agent, and under the mechanical effect of forming pressure, the space that can penetrate into coal dust is inner, after solidifying, produce mechanically link and form the solid skeleton of moulded coal, thereby the cold strength that improves moulded coal, the moulded coal cold and hot state intensity of manufacturing is high, and water resistance is good.
5. moulded coal coldmoulding of the present invention, natural mummification or oven dry all can.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but do not limit the scope of the invention and range of application:
One, contain the preparation of compound binding agent and combustion synergist moulded coal
Embodiment 1
Preparation method containing compound binding agent and combustion synergist moulded coal, comprises following operation steps:
1. according to the weight percent of material component, take respectively: bituminous coal powder 95kg, pre-gelatinized starch 5.5kg, kaolin 7.5kg, polyvinyl alcohol 1kg, potassium permanganate 0.05kg, sodium-chlor 0.90kg, sodium carbonate 0.05kg;
2. 13.2kg water is added in reactor, adds polyvinyl alcohol, be heated to 95 ℃, stir and to make to dissolve completely, then add potassium permanganate respectively, sodium-chlor, sodium carbonate, stir and make to dissolve completely, obtain mixing solutions;
3. pre-gelatinized starch and kaolin are mixed, obtain mixture;
4. mixing solutions and mixture are added in bituminous coal powder, be uniformly mixed, coldmoulding, forming pressure is 300 kilograms of kg, naturally places mummification, obtains.
Embodiment 2
Preparation method containing compound binding agent and combustion synergist moulded coal, comprises following operation steps:
1. according to the weight percent of material component, take respectively: brown coal powder 85kg, pre-gelatinized starch 1.5kg, refractory mortar 2.9kg, polyvinyl alcohol 0.3kg, potassium permanganate 0.015kg, sodium-chlor 0.27kg, sodium carbonate 0.015kg;
2. 7.2kg water is added in reactor, adds polyvinyl alcohol, be heated to 80 ℃, stir and to make to dissolve completely, then add potassium permanganate respectively, sodium-chlor, sodium carbonate, stir and make to dissolve completely, obtain mixing solutions;
3. pre-gelatinized starch and refractory mortar are mixed, obtain mixture;
4. mixing solutions and mixture are added in brown coal powder, be uniformly mixed, coldmoulding, forming pressure is 200kg, dries at 100 ℃, obtains.
Embodiment 3
Preparation method containing compound binding agent and combustion synergist moulded coal, comprises following operation steps:
1. according to the weight percent of material component, take respectively: pulverized anthracite 90kg, pre-gelatinized starch 3kg, kaolin 2kg, wilkinite 2kg, polyvinyl alcohol 0.6kg, potassium permanganate 0.03kg, sodium-chlor 0.5kg, sodium carbonate 0.03kg;
2. 10kg water is added in reactor, adds polyvinyl alcohol, be heated to 90 ℃, stir and to make to dissolve completely, then add potassium permanganate respectively, sodium-chlor, sodium carbonate, stir and make to dissolve completely, obtain mixing solutions;
3. pre-gelatinized starch and kaolin, wilkinite are mixed, obtain mixture;
4. mixing solutions and mixture are added in pulverized anthracite, be uniformly mixed, coldmoulding, forming pressure is 300kg, dries at 90 ℃, obtains.
Embodiment 4
Preparation method containing compound binding agent and combustion synergist moulded coal, comprises following operation steps:
1. according to the weight percent of material component, take respectively: bituminous coal powder 80kg, pre-gelatinized starch 4.5kg, kaolin 2kg, humic acids 4kg, polyvinyl alcohol 0.7kg, potassium permanganate 0.02kg, sodium-chlor 0.6kg, sodium carbonate 0.04kg, unslaked lime 0.5kg;
2. 8.3kg water is added in reactor, adds polyvinyl alcohol, be heated to 90 ℃, stir and to make to dissolve completely, then add potassium permanganate respectively, sodium-chlor, sodium carbonate, unslaked lime, stir and make to dissolve completely, obtain mixing solutions;
3. pre-gelatinized starch and kaolin, humic acids are mixed, obtain mixture;
4. mixing solutions and mixture are added in bituminous coal powder, be uniformly mixed, coldmoulding, forming pressure is 250kg, dries at 90 ℃, obtains.
Two, moulded coal performance test
1. by the above-mentioned embodiment sample preparing, carry out strength test, result shows that moulded coal sample cold strength of the present invention is high, falls and is difficult for fragmentation, can be made into industry, coal briquette for civillan use, refers to following table.
2. the moulded coal 600g that get respectively above-mentioned 4 embodiment sample 600g that prepare, does not add combustion synergist, carries out combustion test.Result shows: during 3 embodiment sample combustion of the present invention, from inner outside release of heat, the speed of igniting is accelerated, and flame lengthens, burn more abundant, increased the internal flame temperature of flame, the bulk temperature of flame is improved, can boiled 7.5kg water, in combustion processes, do not smell the smell of sulfurous gas; The moulded coal that is not added with combustion synergist only can boiled 6kg water, smells the smell of sulfurous gas in combustion processes.The time of two kinds of moulded coal after-flames is basic identical, illustrates that the moulded coal utilization ratio that is added with combustion synergist improves approximately 25%, and harmful gas emission obviously reduces.
Claims (4)
1. the moulded coal containing compound binding agent and combustion synergist, by coal dust, compound binding agent and combustion synergist material component, formed, it is characterized in that, described compound binding agent is pre-gelatinized starch, clay and polyvinyl alcohol, and described combustion synergist is potassium permanganate, sodium-chlor and sodium carbonate;
The weight part ratio of described material component is respectively: coal dust 85-95 part, pre-gelatinized starch 1.5-5.5 part, clay 2.9-7.5 part, polyvinyl alcohol 0.3-1 part, potassium permanganate 0.015-0.05 part, sodium-chlor 0.27-0.90 part, sodium carbonate 0.015-0.05 part.
2. according to claim 1 containing the moulded coal of compound binding agent and combustion synergist, it is characterized in that, described clay is one or more combinations in kaolin, refractory mortar and wilkinite.
As described in arbitrary in claim 1 or 2 containing a preparation method for compound binding agent and combustion synergist moulded coal, it is characterized in that, comprise following operation steps:
(1) according to the weight percent of material component, take respectively: coal dust, pre-gelatinized starch, clay, polyvinyl alcohol, potassium permanganate, sodium-chlor, sodium carbonate;
(2) water that accounts for material component gross weight 8-12% is added in reactor, adds polyvinyl alcohol, be heated to 80-95 ℃, stir and to make to dissolve completely, then add potassium permanganate respectively, sodium-chlor, sodium carbonate, stir and make to dissolve completely, obtain mixing solutions;
(3) pre-gelatinized starch and clay are mixed, obtain mixture;
(4) mixing solutions and mixture are added in coal dust, be uniformly mixed, coldmoulding, naturally places or dries, and obtains.
4. according to claim 3 containing the preparation method of compound binding agent and combustion synergist moulded coal, it is characterized in that: the weight part ratio of described material component is respectively: coal dust 85-95 part, pre-gelatinized starch 1.5-5.5 part, clay 2.9-7.5 part, polyvinyl alcohol 0.3-1 part, potassium permanganate 0.015-0.05 part, sodium-chlor 0.27-0.90 part, sodium carbonate 0.015-0.05 part.
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| CN104560258B (en) * | 2015-01-14 | 2017-01-25 | 李晓雷 | Cleaning briquette coal binder |
| CN104927958B (en) * | 2015-05-22 | 2017-09-29 | 李晓东 | A kind of preparation method of powdered briquette adhesive, the moulded coal containing the adhesive and its moulded coal |
| CN105441672A (en) * | 2015-11-18 | 2016-03-30 | 攀枝花钢城集团协力有限公司 | Formcoke molding binder |
| CN105950246A (en) * | 2016-06-28 | 2016-09-21 | 天津大乘常盛新能源科技有限公司 | Non-drying clean briquette and preparation method thereof |
| WO2020070838A1 (en) * | 2018-10-03 | 2020-04-09 | 新日鉄住金エンジニアリング株式会社 | Production method for briquette |
| KR102243573B1 (en) * | 2019-08-16 | 2021-04-23 | 주식회사 이에스알 | Coal briquet composition using a soluble binder and method for producing the same |
| CN110923031A (en) * | 2019-12-06 | 2020-03-27 | 西安圣华农业科技股份有限公司 | Preparation method of biomass fuel |
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