CN103710064B - Sludge-lignite molded fuel and preparation method thereof - Google Patents
Sludge-lignite molded fuel and preparation method thereof Download PDFInfo
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- CN103710064B CN103710064B CN201310698139.3A CN201310698139A CN103710064B CN 103710064 B CN103710064 B CN 103710064B CN 201310698139 A CN201310698139 A CN 201310698139A CN 103710064 B CN103710064 B CN 103710064B
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- sludge
- brown coal
- additive
- lignite
- mud
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses a sludge-lignite molded fuel which consists of the components of 10-20 parts of living sludge, 55-82 parts of lignite, 4-10 parts of aluminum plant sludge and 5-10 parts of an additive, wherein the additive consists of 65-92 percent of calcium oxide by weight, 3-20 percent of potassium carbonate by weight and 5-15 percent of potassium hydroxide by weight. The invention also discloses a preparation method for the sludge-lignite molded fuel. The preparation method comprises the steps of weighing the living sludge according to the weight part, mixing and stirring the living sludge with the crushed lignite, the aluminum plant sludge and the additive, conveying the stirred mixture into a molding machine for pressing molding. According to the sludge-lignite molded fuel and the preparation method, the living sludge with high moisture content can be directly treated, and the living sludge does not need to be dried; furthermore, the melting point of coal ash can be increased, so that the scorification of a boiler can be relieved; the emission amounts of nitric oxides (NOx), sulfuric oxides (SOx) and mercury (Hg) in a briquette coal combustion process are reduced; comprehensive utilization of the sludge and the lignite is facilitated.
Description
Technical field
The high-efficiency cleaning low stain that the present invention relates to mud utilizes technology, is specifically related to a kind of mud Moulding Process of Brown Coal fuel and preparation method thereof.
Background technology
Along with the propelling of Process of Urbanization Construction, a large amount of mud that mankind's activity produces govern the development in city, and sludge treatment has become one of key issue of the needs solution of building amphitypy society.The domestic sludge processing modes such as traditional Ocean dumping, sanitary landfill, compost are agricultural, direct burning all can cause potential threat to environment.Domestic sludge has certain calorific value, adds raw coal and do shaped coal and be a kind of effective lignin-sludge, utilize the mode of the energy in domestic sludge; On the other hand, brown coal have the advantages that moisture is large, volatile matter is high, directly use efficiency low, if joined by brown coal in briquettes with sludge making, more effectively can utilize brown coal, realize the target of brown coal comprehensive utilization; But the ash fusion point of domestic sludge and brown coal is lower, and combustion processes easily causes boiler scaling.Application number is propose the moulded coal be made up of mud, coal dust, wooden chip, desulfurization deodorant (calcium oxide) in the patent of invention of CN99117010.5, application number is the moulded coal that the patent of invention of CN200910304285.7 discloses by domestic sludge, smears coal, coal briquette bond forms, and application number is that the patent of invention of CN200710050983.X discloses mud, dust removal of calcium carbide furnace, raw coal, additive, the moulded coal of tackiness agent composition and preparation method.Above-mentioned moulded coal preparation method some need carry out processed to domestic sludge, and briquet produce NOx more, very easily to environment, the ash fusion point of moulded coal is low, easily causes boiler scaling.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of mud Moulding Process of Brown Coal fuel and preparation method thereof, solve existing briquettes with sludge in combustion the pollutant emission such as sulphur, nitrogen produce problem of environmental pollution, the low boiler scaling problem caused of the ash fusion point simultaneously solving moulded coal, and domestic sludge can be solved, problem that aluminum manufacturer sludge is difficult to effectively process, utilize with the high-efficiency cleaning realizing mud and brown coal.
To achieve these goals, technical scheme of the present invention is as described below:
A kind of mud Moulding Process of Brown Coal fuel, be made up of following mass parts: domestic sludge 10-20 part, brown coal 55-81 part, aluminum manufacturer sludge 4-10 part, additive 5-15 part, described additive is made up of the potassium hydroxide of the calcium oxide of 65-92wt%, the salt of wormwood of 3-20wt% and 5-15wt%.
Wherein in some embodiments, described mud Moulding Process of Brown Coal fuel is prepared from primarily of the raw material of following weight part: domestic sludge 10-12 part, brown coal 74-80 part, aluminum manufacturer sludge 4-6 part, additive 6-8 part, described additive is made up of the potassium hydroxide of the calcium oxide of 85-92wt%, the salt of wormwood of 3-5wt% and 5-10wt%.
The preparation method of above-mentioned mud Moulding Process of Brown Coal fuel specifically comprises the following steps:
(1) sample: according to above-mentioned weight part, take brown coal, aluminum manufacturer sludge, additive, and respectively brown coal and aluminum manufacturer sludge are crushed to particle diameter and are less than 0.5mm, additive is crushed to particle diameter and is less than 90um;
(2) mix: take domestic sludge according to above-mentioned weight part, mix with the brown coal through fragmentation in step (1), aluminum manufacturer sludge, additive;
(3) stir: in stirrer, above-mentioned compound sample is stirred;
(4) shaping: the mixture after stirring is sent into compression moulding in forming machine.
Compared with prior art, the present invention has following beneficial effect:
(1) additive can reduce the discharge of coal burning pollution thing (NOx, SOx, Hg), and can remove the peculiar smell of mud: salt of wormwood (K
2cO
3), the nitrogenous gas (NOx) that produces of potassium hydroxide (KOH) and coal dust firing reacts to generate and contains nitrogen salt (KN
3, K
3nO
5, K
3nO
4), nitrogen is fixed in ash content, there is good nitrogen fixation effect; Calcium oxide (CaO) is a kind of well sulphur-fixing agent, adds calcium oxide like furnace sorbent injection desulfurization treating processes, at process of coal combustion and SO in moulded coal
2reaction generates stable CaSO
4, thus sulphur is fixed in lime-ash, saved cost, the magnesium oxide contained in domestic sludge is in addition natural high-temperature fixed sulfur auxiliary agent, can promote captured sulfur result; Calcium oxide can eliminate the bacterium in mud, removes the peculiar smell in mud; Domestic sludge contains sodium-chlor (NaCl), and chlorine element can promote that the Elemental Mercury in flue gas is converted into bivalent mercury, and the Hg that burning is produced is more captured to be removed, thus reduces the discharge of Hg.
(2) ash fusion point of moulded coal can significantly be improved: containing a large amount of aluminum oxide in aluminum manufacturer sludge, under high temperature, aluminum oxide and silicon oxide react and generate mullite mineral substance, inhibit the formation of the iron aluminosilicate fused matter of low melting point, thus improve the ash fusion point of moulded coal, alleviate boiler scaling tendency.
(3) without the need to adding binding agent: mud has certain agglutinating value(of coal), tackiness agent can be made at normal temperatures; Calcium oxide also serves the effect of binding agent, water in partial oxidation calcium and mud reacts and generates calcium hydroxide, carbon dioxide reaction in calcium hydroxide and air generates calcium carbonate network crystal skeleton, mud and calcium oxide acting in conjunction can guarantee the cold strength of moulded coal, meet shipping storage demand, calcium carbonate can be calcination into calcium oxide in combustion simultaneously, is conducive to strengthening captured sulfur result.
(4) fire behaviour is good: the point of ignition of mud and brown coal is all lower, and the release of moulded coal volatile matter in combustion can change the internal structure of moulded coal, and mud can be used as ignition dope, raising agent, facilitates type burning of coal.
(5) domestic sludge and other component stirring pressing and moulding of high-moisture can be used, without the need to carrying out drying treatment in advance to domestic sludge, the moisture that existence simultaneously in mud and brown coal is a large amount of, this also avoids and add extra water at whipping process, save water resources, simplify treatment scheme.
The composition of additive and content and aluminum manufacturer sludge content in mud Moulding Process of Brown Coal fuel of the present invention, that contriver passes through large quantifier elimination, determine according to the sulphur in domestic sludge, brown coal and nitrogen element content, the composition of the additive needed for different types of raw material is different with content.
Accompanying drawing explanation
Fig. 1 is the schema that the present invention prepares mud Moulding Process of Brown Coal fuel.
Embodiment
By following examples, explanation is further expalined to the present invention.
Research shows, aluminum oxide can significantly improve ash fusion point and alleviate boiler scaling, and in aluminum manufacturer sludge, have a large amount of aluminum oxide, the problem that both can solve briquettes with sludge low ash smelting point in moulded coal if aluminum manufacturer sludge added to has also processed aluminum manufacturer sludge simultaneously, thus fully utilizes mud and brown coal better.
Specifically, in one embodiment, a kind of mud Moulding Process of Brown Coal fuel that the present invention proposes, the raw material primarily of following weight part is formed: domestic sludge 10-20 part, brown coal 55-81 part, aluminum manufacturer sludge 4-10 part, additive 5-15 part; Described additive is made up of the potassium hydroxide of the calcium oxide of 65-92wt%, the salt of wormwood of 3-20wt% and 5-15wt%.
Preferably, described mud Moulding Process of Brown Coal fuel is prepared from primarily of the raw material of following weight part: domestic sludge 10-12 part, brown coal 74-80 part, aluminum manufacturer sludge 4-6 part, additive 6-8 part; Described additive is made up of the potassium hydroxide of the calcium oxide of 85-92wt%, the salt of wormwood of 3-5wt% and 5-10wt%.
Wherein, selected aluminum manufacturer sludge is the sample after mild dehydration.
As shown in Figure 1, the preparation method of above-mentioned mud Moulding Process of Brown Coal fuel, comprises the following steps:
(1) sample: take brown coal, aluminum manufacturer sludge, additive according to weight part, and respectively brown coal and aluminum manufacturer sludge are crushed to particle diameter and are less than 0.5mm, additive is crushed to particle diameter and is less than 90um;
(2) mix: take domestic sludge according to weight part, mix with the brown coal through fragmentation in step (1), aluminum manufacturer sludge, additive;
(3) stir: in stirrer, above-mentioned compound sample is stirred;
(4) shaping: the mixture after stirring is sent into compression moulding in forming machine.
Wherein, without the need to carrying out drying treatment in advance to domestic sludge, and domestic sludge and other component stirring pressing and moulding of high-moisture can be used,
Example 1: a kind of mud Moulding Process of Brown Coal fuel, raw material primarily of following weight part is prepared from: domestic sludge 12 parts, 75 parts, brown coal, aluminum manufacturer sludge 6 parts, additive 7 parts, described additive is made up of the potassium hydroxide of the calcium oxide of 90wt%, the salt of wormwood of 3wt% and 7wt%.
Example 2: a kind of mud Moulding Process of Brown Coal fuel, raw material primarily of following weight part is prepared from: domestic sludge 20 parts, 55 parts, brown coal, aluminum manufacturer sludge 10 parts, additive 15 parts, described additive is made up of the potassium hydroxide of the calcium oxide of 92wt%, the salt of wormwood of 3wt% and 5wt%.
Example 3: a kind of mud Moulding Process of Brown Coal fuel, raw material primarily of following weight part is prepared from: domestic sludge 10 parts, 81 parts, brown coal, aluminum manufacturer sludge 4 parts, additive 5 parts, described additive is made up of the potassium hydroxide of the calcium oxide of 65wt%, the salt of wormwood of 20wt% and 15wt%.
Example 4: a kind of mud Moulding Process of Brown Coal fuel, raw material primarily of following weight part is prepared from: domestic sludge 20 parts, 64 parts, brown coal, aluminum manufacturer sludge 5 parts, additive 11 parts, described additive is made up of the potassium hydroxide of the calcium oxide of 84wt%, the salt of wormwood of 8wt% and 8wt%.
The above embodiment is only that the present invention describes more detailed several embodiments, but can not be interpreted as the restriction of the scope of the invention.For those of ordinary skills, can carry out all shape changeables (as formed component ratio) to it based on the present invention's design, these contents are all within protection scope of the present invention.The content protected with claim of the present invention for foundation.
Claims (6)
1. the mud Moulding Process of Brown Coal fuel of a solid sulphur fixed nitrogen, it is characterized in that, be made up of the raw material of following weight part: domestic sludge 10-20 part, brown coal 55-81 part, aluminum manufacturer sludge 4-10 part, additive 5-15 part, wherein, brown coal and aluminum manufacturer sludge particle diameter are less than 0.5mm, and additive particle diameter is less than 90um, and described additive is made up of the potassium hydroxide of the calcium oxide of 65-92wt%, the salt of wormwood of 3-20wt% and 5-15wt%.
2., by mud Moulding Process of Brown Coal fuel according to claim 1, it is characterized in that, be made up of the raw material of following weight part: domestic sludge 10-12 part, brown coal 74-80 part, aluminum manufacturer sludge 4-6 part, additive 6-8 part.
3., by the mud Moulding Process of Brown Coal fuel described in claim 1 or 2, it is characterized in that, described additive is made up of the potassium hydroxide of the calcium oxide of 85-92wt%, the salt of wormwood of 3-5wt% and 5-10wt%.
4., by the mud Moulding Process of Brown Coal fuel described in claim 1 or 2, it is characterized in that, domestic sludge is without the need to pre-dried.
5., by the mud Moulding Process of Brown Coal fuel described in claim 1 or 2, it is characterized in that, selected aluminum manufacturer sludge is sample after mild dehydration.
6., for the preparation of a method for the mud Moulding Process of Brown Coal fuel described in any one of claim 1-5, it is characterized in that, the method comprises the following steps:
(1) by the weight part described in any one of claim 1-5, take brown coal, aluminum manufacturer sludge, additive, and respectively brown coal and aluminum manufacturer sludge are crushed to particle diameter and are less than 0.5mm, additive is crushed to particle diameter and is less than 90um;
(2) by the weight part described in any one of claim 1-5, take domestic sludge, mix with the brown coal through fragmentation in step (1), aluminum manufacturer sludge, additive;
(3) in stirrer, compound sample is stirred;
(4) mixture after stirring is sent into compression moulding in forming machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310698139.3A CN103710064B (en) | 2013-12-18 | 2013-12-18 | Sludge-lignite molded fuel and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310698139.3A CN103710064B (en) | 2013-12-18 | 2013-12-18 | Sludge-lignite molded fuel and preparation method thereof |
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| CN103710064A CN103710064A (en) | 2014-04-09 |
| CN103710064B true CN103710064B (en) | 2015-05-20 |
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| CN110408452A (en) * | 2019-08-27 | 2019-11-05 | 安徽环态生物能源科技开发有限公司 | A kind of biological particles and production method of high-efficiency cleaning |
| CN111019733A (en) * | 2019-12-05 | 2020-04-17 | 山西太钢不锈钢股份有限公司 | Biochemical sludge electricity-mixed coal blending combustion system and method |
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| CN1396239A (en) * | 2002-07-01 | 2003-02-12 | 黄全刚 | Additive of fuel coal and mud-type fuel coal |
| KR20090116582A (en) * | 2008-05-07 | 2009-11-11 | 최명부 | The coal composite using dyeing waste water sludge as dye additive |
| CN101619253A (en) * | 2009-07-13 | 2010-01-06 | 任荣 | Moulded coal fuel composition and preparation method thereof |
| CN101914405A (en) * | 2010-08-26 | 2010-12-15 | 佛山市三水区大塘污水处理有限公司 | Sludge briquette fuel as well as production method and production system thereof |
| CN102120939A (en) * | 2011-01-20 | 2011-07-13 | 华侨大学 | Novel honeycomb briquette |
| CN102260051A (en) * | 2010-05-28 | 2011-11-30 | 北京工业大学 | Method for treating NOx generated by firing coal in novel dry-process cement kiln |
| CN103374425A (en) * | 2012-04-27 | 2013-10-30 | 王庆 | Sludge pulverized coal and preparation method thereof |
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2013
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Patent Citations (8)
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|---|---|---|---|---|
| CN1396239A (en) * | 2002-07-01 | 2003-02-12 | 黄全刚 | Additive of fuel coal and mud-type fuel coal |
| KR20090116582A (en) * | 2008-05-07 | 2009-11-11 | 최명부 | The coal composite using dyeing waste water sludge as dye additive |
| CN101619253A (en) * | 2009-07-13 | 2010-01-06 | 任荣 | Moulded coal fuel composition and preparation method thereof |
| CN102260051A (en) * | 2010-05-28 | 2011-11-30 | 北京工业大学 | Method for treating NOx generated by firing coal in novel dry-process cement kiln |
| CN101914405A (en) * | 2010-08-26 | 2010-12-15 | 佛山市三水区大塘污水处理有限公司 | Sludge briquette fuel as well as production method and production system thereof |
| CN102120939A (en) * | 2011-01-20 | 2011-07-13 | 华侨大学 | Novel honeycomb briquette |
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Granted publication date: 20150520 Termination date: 20191218 |