CN101054542B - Application of high water content sludge in moulded coal preparation - Google Patents
Application of high water content sludge in moulded coal preparation Download PDFInfo
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- CN101054542B CN101054542B CN2007100722120A CN200710072212A CN101054542B CN 101054542 B CN101054542 B CN 101054542B CN 2007100722120 A CN2007100722120 A CN 2007100722120A CN 200710072212 A CN200710072212 A CN 200710072212A CN 101054542 B CN101054542 B CN 101054542B
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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
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Abstract
The present invention discloses an application of producing shaped coal by sludge with a moisture content which is more than 80 percent, relating to directly produce shaped coal by sludge. The method includes following steps: mixing the sludge with a high moisture content and coal slurry and rough coal; agitating sludge with a high moisture content and coal slurry and rough coal in the mixing mill, then directly feeding them into helix extrusion dehydration shaped coal moulding apparatus for dehydration and moulding, then putting the shaped coal containing sludge into drier for drying after extrusion moulding; thus obtaining a hollow or irregular shaped coal which contains sludge. The invention reduces the land resource loss due to sludge storage and the environment pollution, and makes the sludge with a high moisture content produced by city sewage treatment become useful.
Description
Technical field
The present invention relates to utilize mud directly to prepare the hollow moulded coal, especially utilizing water ratio is that municipal sewage treatment mud more than 80% directly prepares the hollow moulded coal.
Background technology
At present, the mud that produces after China's municipal sewage treatment, its disposal options mainly contains: the one, the mode of landfill, this mode land occupation can bring pollution to underground water; The 2nd, fill out the sea or add the rivers mode, but serious to sea or river pollution; The 3rd, to burn after the mummification, this mode is invested and the running cost height.So the processing of the mud that produces after the municipal sewage treatment and utilization are the problems that people pay special attention to always.On March 27th, 1991, invention (the applicant: Guo Weixian of State Patent Office's disclosed " making the moulded coal of cakingagent with biochemical sludge ", application number: 89105162.7), be to be briquette binder with oil-containing industrial water mud, must heat boils malodorous mud, is not that sludge from wastewater treatment plant with high-moisture percentage directly is used for making moulded coal; Invention (the applicant: sewage purification plant, Huangshi green hill, Wuhan Urban Construction College of State Patent Office's on February 10th, 1993 disclosed " utilizing biochemical sludge to make briquettes with sludge ", application number: 92103704.X), moisture percentage in sewage sludge is 40～50%, neither directly make moulded coal with high water content sludge; (applicant: Guangzhou energy institute of the Chinese Academy of Sciences, application number: 99117010.5) employed moisture percentage in sewage sludge needs to handle through second dehydration 60～80% in the invention of State Patent Office on February 7 calendar year 2001 disclosed " a kind of briquettes with sludge preparation method ".And the sewage treatment plant dewater sludge water ratio can't make moisture percentage in sewage sludge drop to below 80% all more than 80% without the deep dehydration processing, and deep dehydration sludge treatment machinery mummification equipment has high input day-to-day operation expense height.So the high water content sludge more than 80% that produces after the municipal sewage treatment without deep dehydration is not directly used in the preparation moulded coal at present.Existing moulded coal is to reduce cost mostly to use inorganic molding adhesive, and binding agent had not only reduced the thermal value of moulded coal but also fire-retardant, caused the problem that the moulded coal burning is insufficient and coal core place is difficult to grill thoroughly.
Summary of the invention
The present invention is difficult for disposing in order to solve the mud that produces after the existing municipal sewage treatment, land occupation, investment and running cost height, environmental pollution problems, provide a kind of water ratio be mud more than 80% in the application of preparation in the moulded coal, the concrete technical scheme that addresses the above problem is as follows:
The present invention utilizes the high water content sludge (water ratio is more than 80%) after the municipal sewage treatment to mix with coal slime and former coal facies, the raw coal addition accounts for 6～9% of coal slime and raw coal gross weight, high water content sludge and coal slime and raw coal are 1: 1～3 by weight, to be 1: 1～3 mixed high water content sludges by weight, coal slime and raw coal are puddled in mixing pan evenly, to puddle uniform high water content sludge, coal slime and raw coal are squeezed into hollow or irregular moulded coal after directly sending into and dewatering in the screw extrusion dehydration moulded coal molding device, and then the moulded coal that contains mud of extrusion molding put into moulded coal drying plant inner drying, make the hollow or the irregular moulded coal that contain mud.
The present invention utilizes the high water content sludge (water ratio is more than 80%) after the municipal sewage treatment to mix with coal slime and former coal facies, the raw coal addition accounts for 6～9% of coal slime and raw coal gross weight, high water content sludge and coal slime and raw coal are 1: 1～1.5 by weight, to be 1: 1～1.5 mixed high water content sludges by weight, coal slime and raw coal are puddled in mixing pan evenly, to puddle uniform high water content sludge, coal slime and raw coal are squeezed into hollow or irregular moulded coal after directly sending into and dewatering in the screw extrusion dehydration moulded coal molding device, and then the moulded coal that contains mud of extrusion molding put into moulded coal drying plant inner drying, make the hollow or the irregular moulded coal that contain mud.
The present invention utilizes the high water content sludge (water ratio is more than 80%) after the municipal sewage treatment to be mixed with hollow or irregular moulded coal with raw coal, has reduced because of mud and has deposited the land resources that takies, and has reduced the pollution to environment.Make the high water content sludge after the municipal sewage treatment become the useless energy that is.For a new path has been opened up in the disposal and the utilization of the mud that produces after the municipal sewage treatment.A screw extrusion dehydration moulded coal molding device can utilize 1.2 ten thousand tons of high water content sludges in 1 year, had solved high water content sludge and had disposed difficult problem.The present invention adopts screw extrusion dehydration moulded coal molding device, has solved dewatered sludge machinery mummification equipment and has had high input the problem that the day-to-day operation expense is high.All more than 5,000 kilocalories, the temperature of combustion of this moulded coal in boiler all can surpass 950 degrees centigrade to the thermal value of moulded coal of the present invention, is higher than the decomposition temperature of 850 degrees centigrade of Dioxins far away, therefore can not produce secondary pollution.
Description of drawings
Fig. 1 is the structural representation of HWXM-A hollow or irregular moulded coal machine.1 is screw rod among the figure, the 2nd, and charging opening, the 3rd, vacuum chamber, the 4th, body, the 5th, moulded coal mould, the 6th, expressed water outlet, the 7th, frame, the 8th, vacuum pump.
Embodiment
Embodiment one: present embodiment utilizes the high water content sludge (water ratio is more than 80%) after the municipal sewage treatment to mix with coal slime and former coal facies, the raw coal addition accounts for 6～9% of coal slime and raw coal gross weight, high water content sludge and coal slime and raw coal are 1: 1～3 by weight, to be 1: 1～3 mixed high water content sludges by weight, coal slime and raw coal are puddled in mixing pan evenly, to puddle uniform high water content sludge, coal slime and raw coal are directly sent into by charging opening 2 and are squeezed into hollow or irregular moulded coal after dewatering in the screw extrusion dehydration moulded coal molding device, and then the moulded coal that contains mud of extrusion molding put into moulded coal drying plant inner drying, make the hollow or the irregular moulded coal that contain mud.The water ratio of the briquettes with sludge of making is below 5%.
The raw coal addition accounts for 6～15% of coal slime and raw coal gross weight.Adding raw coal is to make the state of combustion that reaches the best for briquettes with sludge.
Screw extrusion dehydration moulded coal molding device adopts HWXM-A hollow or irregular moulded coal machine.
Contain large amount of organic in the high water content sludge, and the thermal value that organism had in the mud is not offset by its high-moisture percentage, and these organism serve as the moulding that tamanori is easy to moulded coal, organism burning earlier again in combustion processes, make the good permeability of moulded coal, played combustion-supporting effect, this moulded coal is a slush molding in addition, makes the moulded coal sufficient combustion.
The also available coal dust of above-mentioned coal slime substitutes.
Embodiment two: the difference of present embodiment and embodiment one is to add the deodorizing sulphur-fixing agent of mud, coal slime and raw coal gross weight 1～1.5% in high water content sludge, coal slime and raw coal.
Embodiment three: the high water content sludge of present embodiment and coal slime and raw coal are to mix at 1: 2.5 by weight.Other is identical with embodiment one.
Embodiment four: the high water content sludge of present embodiment and coal slime and raw coal are to mix at 1: 1.5 by weight.Other is identical with embodiment one.
Embodiment five: the high water content sludge of present embodiment and coal slime and raw coal are to mix at 1: 1 by weight.Other is identical with embodiment one.
HWXM-A hollow or irregular moulded coal machine with throughput 10T/h move 10 hours every day, and high water content sludge and coal slime and raw coal are 1: 3 by weight, can utilize 1.2 ten thousand tons of high water content sludges in 1 year.
Claims (2)
1. method of utilizing high water content sludge to prepare moulded coal, it is characterized in that: water-containing sludge after the municipal sewage treatment, mixture, the deodorizing sulphur-fixing agent be made up of coal slime and raw coal are mixed mutually, wherein, the water ratio of described water-containing sludge is more than 80%, the weight content of raw coal in the mixture of being made up of coal slime and raw coal is 6～15%, the water-containing sludge of water ratio more than 80% is 1: 1～1.5 with the weight ratio of the mixture of being made up of coal slime and raw coal, and the deodorizing sulphur-fixing agent accounts for 1～1.5% of mud, coal slime and raw coal gross weight; To in mixing pan, puddle evenly according to the mixed water-containing sludge of above-mentioned requirements, coal slime and raw coal then; To puddle uniform water-containing sludge, coal slime and raw coal more directly sends into and is squeezed into hollow or irregular moulded coal after dewatering in the screw extrusion dehydration moulded coal molding device, again the hollow or the irregular moulded coal of extrusion molding are put into moulded coal drying plant inner drying afterwards, make water ratio at the moulded coal below 5%.
2. a kind of method of utilizing high water content sludge to prepare moulded coal according to claim 1 is characterized in that high water content sludge and coal slime and raw coal are to mix at 1: 1 by weight.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100722120A CN101054542B (en) | 2007-05-16 | 2007-05-16 | Application of high water content sludge in moulded coal preparation |
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| CN2007100722120A CN101054542B (en) | 2007-05-16 | 2007-05-16 | Application of high water content sludge in moulded coal preparation |
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| CN101054542A CN101054542A (en) | 2007-10-17 |
| CN101054542B true CN101054542B (en) | 2011-09-21 |
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| CN2007100722120A Expired - Fee Related CN101054542B (en) | 2007-05-16 | 2007-05-16 | Application of high water content sludge in moulded coal preparation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103289771A (en) * | 2013-06-28 | 2013-09-11 | 冯恩福 | Preparation method of green polymerization fuel |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056729A (en) * | 2014-06-30 | 2014-09-24 | 山西东华机械有限公司 | Self walking type water coal separating machine |
| CN105542897A (en) * | 2015-12-10 | 2016-05-04 | 内蒙古工业大学 | RDF prepared from dust in calcium carbide furnace, coal slime and sludge and preparation method thereof |
| CN113249149A (en) * | 2021-05-24 | 2021-08-13 | 江苏秋林特能装备股份有限公司 | Process for preparing derivative biochar pulp from semi-coke wastewater organic concentrated solution |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050214A (en) * | 1989-09-12 | 1991-03-27 | 郭渭贤 | Do the moulded coal of binding agent with biochemical sludge |
| CN1068847A (en) * | 1992-05-16 | 1993-02-10 | 黄石市青山湖污水净化厂 | The briquettes with sludge that utilizes biochemical sludge to make |
| CN1282781A (en) * | 1999-07-29 | 2001-02-07 | 中国科学院广州能源研究所 | Process for preparing briquettes with sludge |
-
2007
- 2007-05-16 CN CN2007100722120A patent/CN101054542B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050214A (en) * | 1989-09-12 | 1991-03-27 | 郭渭贤 | Do the moulded coal of binding agent with biochemical sludge |
| CN1068847A (en) * | 1992-05-16 | 1993-02-10 | 黄石市青山湖污水净化厂 | The briquettes with sludge that utilizes biochemical sludge to make |
| CN1282781A (en) * | 1999-07-29 | 2001-02-07 | 中国科学院广州能源研究所 | Process for preparing briquettes with sludge |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103289771A (en) * | 2013-06-28 | 2013-09-11 | 冯恩福 | Preparation method of green polymerization fuel |
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| CN101054542A (en) | 2007-10-17 |
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