CN105344692A - Process for preparing quick lime from garbage pyrolysis gas - Google Patents

Process for preparing quick lime from garbage pyrolysis gas Download PDF

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Publication number
CN105344692A
CN105344692A CN201410409661.XA CN201410409661A CN105344692A CN 105344692 A CN105344692 A CN 105344692A CN 201410409661 A CN201410409661 A CN 201410409661A CN 105344692 A CN105344692 A CN 105344692A
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CN
China
Prior art keywords
lime
gas
quick lime
calcining kiln
refuse
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Pending
Application number
CN201410409661.XA
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Chinese (zh)
Inventor
张光杰
林春堆
陈欢乐
张孚清
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FUJIAN ZHENGREN ENVIRONMENTAL PROTECTION Co Ltd
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FUJIAN ZHENGREN ENVIRONMENTAL PROTECTION Co Ltd
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Priority to CN201410409661.XA priority Critical patent/CN105344692A/en
Publication of CN105344692A publication Critical patent/CN105344692A/en
Pending legal-status Critical Current

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Abstract

The present invention discloses a method for preparing quick lime from garbage pyrolysis gas, wherein original domestic garbage is subjected to sorting, crushing and drying, the obtained material is subjected to pyrolysis gasification to generate combustible gas, the combustible gas is burned, the hot gas obtained from the burning and natural gas are mixed, and the obtained mixed gas is introduced into a lime calcining kiln filled with limestone to prepare the quick lime. According to the present invention, the heat released from the garbage burning is used to fire the lime so as to save the lime buying cost; the gas containing a large amount of heat energy is used to fire the lime while being not directly discharged into the air so as to avoid the greenhouse effect; the fired quick lime is re-used for the deodorizing process during the domestic garbage treatment process, such that the garbage treatment forms the economically-saved beneficial cycle; and the fired quick lime can be sold so as to bringing the economic value.

Description

A kind of refuse pyrolysis gas prepares quick lime technique
Technical field
The present invention relates to the technology of preparing of quick lime in the processing procedure of house refuse, particularly relate to a kind of refuse pyrolysis gas and prepare quick lime technique.
Background technology
Along with the development of society, the quickening of urbanization process, urban population increases, living standards of the people improve, and the output of domestic waste is constantly increasing, and the composition of house refuse is also increasingly sophisticated, day by day serious to the harm of the pollution of environment and people ' s health, also limit the development in city.The direct landfill of rubbish can affect soil, polluted source.If process rubbish being carried out to science will be turned waste into wealth, such as: by incineration firing or pyrolytic gasification, discharge heat energy, utilize heat energy to generate electricity, residue is used for baking bricks, and is exactly all well and good technical scheme.But in the process processed rubbish, due to the decomposition of microorganism, can discharge a large amount of foul smell, stench affects the normal work of workman, even threatens the living environment of nearby residents, rubbish deodorizing is become to the important step of garbage disposal.
Lime is the important materials of house refuse deodorizing, is formed through 1000-1200 DEG C of calcining by lime stone, and following reaction occurs under the condition of high temperature or calcining: CaCO3=CaO+CO2 ↑.And garbage disposal plant is generally located at away from residential block or mountain area, from mountain, lime stone is gathered if can gather materials on the spot, utilizing the heat energy lime calcining discharged in garbage processing procedure after people, lime and then be applied in the deodorizing of rubbish, will be good technical scheme.
Summary of the invention
A kind of refuse pyrolysis gas is the object of the present invention is to provide to prepare quick lime technique.
Above-mentioned purpose of the present invention is realized by following technical proposal:
A kind of refuse pyrolysis gas prepares quick lime technique, through sorting, pulverizing and drying by former house refuse, then carry out pyrolytic gasification and generate fuel gas, incineration of combustible gas, is passed into the method for in the lime calcining kiln that fill lime stone preparing quick lime after being mixed by burning gained hot gas with natural gas;
Comprise following step:
1) sub-elect the inorganic matter (inorganic matter is for recycling and reuse) such as metal, glass, stone in former house refuse, retain the organic matter in house refuse;
2) after inorganic matter being removed in sorting, remaining organic domestic waste is put into pulverizer and is pulverized;
3) organic domestic waste after pulverizing is put into drying equipment and carry out drying process;
4) dried organic domestic waste is put into pyrolysis gasification furnace, carry out pyrolytic gasification, obtain fuel gas;
5) fuel gas is passed into combustion chamber to burn, obtain the hot gas of 1000-1100 DEG C;
6) lime calcining kiln is passed into by after burning gained hot gas and the mixing of natural gas phase, natural gas in lime calcining kiln heated combustion (under the effect of high temperature hot gas, natural gas has reached its ignition point, enough oxygen is had in calcining kiln, meet the burning condition of natural gas), temperature in lime calcining kiln is maintained between 1000-1300 DEG C, makes thick quick lime;
7) fine finishining is carried out to thick quick lime, and then make finished product quick lime.
Further, the temperature in lime calcining kiln in step 6) is maintained 1150 DEG C.
After adopting above technical scheme, the invention has the beneficial effects as follows: the heat 1, utilizing waste incineration to discharge carrys out lime calcining, save the cost buying lime; 2, the gas containing a large amount of heat energy is used for firing quick lime, and is not directly discharged in air, avoids greenhouse effects; 3, the quick lime fired returns for the deodorization process in domestic rubbish disposal process, makes garbage disposal form the benign cycle of economy; Also the quick lime fired can be sold, bring economic worth.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
Specific embodiment
More describe technical scheme of the present invention in detail below by embodiment, but protection domain is not limited thereto.
The drying equipment related in following embodiment can select equipment disclosed in the patent of invention of another " one way of life garbage drying equipment " by name.
The pyrolysis gasification furnace related in following embodiment can select equipment disclosed in the patent of invention of another " one way of life refuse pyrolysis gasification furnace " by name or other like product.
Device disclosed in the utility model patent of another " one way of life refuse pyrolysis combustible gas high-temp combustion device " by name can be selected in the combustion chamber related in following embodiment, or other like product.
embodiment 1: a kind of refuse pyrolysis gas prepares quick lime technique, through sorting, pulverizing and drying by former house refuse, then carry out pyrolytic gasification and generate fuel gas, incineration of combustible gas, is passed into the method for in the lime calcining kiln that fill lime stone preparing quick lime after being mixed by burning gained hot gas with natural gas;
Comprise following step: 1) sub-elect the inorganic matters (inorganic matter is for recycling and reuse) such as the metal in former house refuse, glass, stone, retain the organic matter in house refuse; 2) after inorganic matter being removed in sorting, remaining organic domestic waste is put into pulverizer and is pulverized; 3) organic domestic waste after pulverizing is put into drying equipment and carry out drying process; 4) dried organic domestic waste is put into pyrolysis gasification furnace, carry out pyrolytic gasification, obtain fuel gas; 5) fuel gas is passed into combustion chamber to burn, obtain the hot gas of 1000-1100 DEG C; 6) lime calcining kiln is passed into by after burning gained hot gas and the mixing of natural gas phase, natural gas in lime calcining kiln heated combustion (under the effect of high temperature hot gas, natural gas has reached its ignition point, enough oxygen is had in calcining kiln, meet the burning condition of natural gas), make the temperature in lime calcining kiln maintain 1000 DEG C, make thick quick lime; 7) fine finishining is carried out to thick quick lime, and then make finished product quick lime.
embodiment 2:a kind of refuse pyrolysis gas prepares quick lime technique, comprises following step: 1) sub-elect the inorganic matters (being for recycling and reuse to inorganic matter) such as the metal in former house refuse, glass, stone, retains the organic matter in house refuse; 2) after inorganic matter being removed in sorting, remaining organic domestic waste is put into pulverizer and is pulverized; 3) organic domestic waste after pulverizing is put into drying equipment and carry out drying process; 4) dried organic domestic waste is put into pyrolysis gasification furnace, carry out pyrolytic gasification, obtain fuel gas; 5) fuel gas is passed into combustion chamber to burn, obtain the hot gas of 1000-1100 DEG C; 6) be passed into lime calcining kiln by after burning gained hot gas and the mixing of natural gas phase, natural gas is heated combustion in lime calcining kiln, makes the temperature in lime calcining kiln maintain 1300 DEG C, makes thick quick lime; 7) fine finishining is carried out to thick quick lime, and then make finished product quick lime.
embodiment 3:a kind of refuse pyrolysis gas prepares quick lime technique, through sorting, pulverizing and drying by former house refuse, then carry out pyrolytic gasification and generate fuel gas, incineration of combustible gas, is passed into the method for in the lime calcining kiln that fill lime stone preparing quick lime after being mixed by burning gained hot gas with natural gas;
Comprise following step:
1) sub-elect the inorganic matter (inorganic matter is for recycling and reuse) such as metal, glass, stone in former house refuse, retain the organic matter in house refuse;
2) after inorganic matter being removed in sorting, remaining organic domestic waste is put into pulverizer and is pulverized;
3) organic domestic waste after pulverizing is put into drying equipment and carry out drying process;
4) dried organic domestic waste is put into pyrolysis gasification furnace, carry out pyrolytic gasification, obtain fuel gas;
5) fuel gas is passed into combustion chamber to burn, obtain the hot gas of 1000-1100 DEG C;
6) lime calcining kiln is passed into by after burning gained hot gas and the mixing of natural gas phase, natural gas in lime calcining kiln heated combustion (under the effect of high temperature hot gas, natural gas has reached its ignition point, enough oxygen is had in calcining kiln, meet the burning condition of natural gas), make the temperature in lime calcining kiln maintain 1150 DEG C, make thick quick lime;
7) fine finishining is carried out to thick quick lime, and then make finished product quick lime.
Through the practical probation in January, 2014-2014 year May, the lime high-quality the most that the technical scheme wherein in embodiment 3 is produced, can not only meet lime required in the process of domestic rubbish disposal, and can profit on sale.
The foregoing is only the preferred embodiments of the present invention, be not limited to invention, although with reference to previous embodiment to invention has been detailed description, for the technical staff in wooden field, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within all spirit in invention and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in invention.

Claims (2)

1. a refuse pyrolysis gas prepares quick lime technique, it is characterized in that: described refuse pyrolysis gas prepares quick lime technique, through sorting, pulverizing and drying by former house refuse, then carry out pyrolytic gasification and generate fuel gas, incineration of combustible gas, is passed into the method for in the lime calcining kiln that fill lime stone preparing quick lime after being mixed by burning gained hot gas with natural gas;
Comprise following step:
1) sub-elect the inorganic matter (inorganic matter is for recycling and reuse) such as metal, glass, stone in former house refuse, retain the organic matter in house refuse;
2) after inorganic matter being removed in sorting, remaining organic domestic waste is put into pulverizer and is pulverized;
3) organic domestic waste after pulverizing is put into drying equipment and carry out drying process;
4) dried organic domestic waste is put into pyrolysis gasification furnace, carry out pyrolytic gasification, obtain fuel gas;
5) fuel gas is passed into combustion chamber to burn, obtain hot gas;
6) be passed into lime calcining kiln by after burning gained hot gas and the mixing of natural gas phase, natural gas, in lime calcining kiln combustion, makes the temperature in lime calcining kiln maintain between 1000-1300 DEG C, makes thick quick lime;
7) fine finishining is carried out to thick quick lime, and then make finished product quick lime.
2. refuse pyrolysis gas according to claim 1 prepares quick lime technique, it is characterized in that: the temperature in lime calcining kiln in step 6) maintained 1000-1300 DEG C (preferable temperature maintains 1150 DEG C).
CN201410409661.XA 2014-08-20 2014-08-20 Process for preparing quick lime from garbage pyrolysis gas Pending CN105344692A (en)

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CN105344692A true CN105344692A (en) 2016-02-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112456822A (en) * 2020-11-05 2021-03-09 杨恒武 Production process of finished lime

Citations (8)

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Publication number Priority date Publication date Assignee Title
CN1350143A (en) * 2000-10-19 2002-05-22 金卫强 Garbage pyrolyzing and gasifying incineration system and special apparatus and production process
JP2004073976A (en) * 2002-08-14 2004-03-11 Mitsui Eng & Shipbuild Co Ltd Method of treating waste gypsum product
CN1903457A (en) * 2006-07-28 2007-01-31 天津大学 Method and equipment for pyrogenic decomposition and carbonisation of urban garbage
CN101545398A (en) * 2009-05-01 2009-09-30 枣庄新中兴实业有限责任公司 Biomass power generation method
CN101713304A (en) * 2009-09-30 2010-05-26 陈小刚 Method for cycle power generation by carrying out wet decomposition pretreatment, dry distillation and gasification on domestic garbage
CN101879518A (en) * 2010-06-13 2010-11-10 张锦明 Pollution-free synthetic treatment method for garbage in village and town
JP2011020060A (en) * 2009-07-16 2011-02-03 Tetsuo Masui Garbage disposal system
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Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1350143A (en) * 2000-10-19 2002-05-22 金卫强 Garbage pyrolyzing and gasifying incineration system and special apparatus and production process
JP2004073976A (en) * 2002-08-14 2004-03-11 Mitsui Eng & Shipbuild Co Ltd Method of treating waste gypsum product
CN1903457A (en) * 2006-07-28 2007-01-31 天津大学 Method and equipment for pyrogenic decomposition and carbonisation of urban garbage
CN101545398A (en) * 2009-05-01 2009-09-30 枣庄新中兴实业有限责任公司 Biomass power generation method
JP2011020060A (en) * 2009-07-16 2011-02-03 Tetsuo Masui Garbage disposal system
CN101713304A (en) * 2009-09-30 2010-05-26 陈小刚 Method for cycle power generation by carrying out wet decomposition pretreatment, dry distillation and gasification on domestic garbage
CN101879518A (en) * 2010-06-13 2010-11-10 张锦明 Pollution-free synthetic treatment method for garbage in village and town
CN102776009A (en) * 2012-08-15 2012-11-14 中国科学院广州能源研究所 Process for industrially producing carbon, gas, oil and electricity through biomass energy forming and destructive distillation

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Title
马润田等: "陶瓷窑炉的廉价气体燃料", 《节能环保技术》 *

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112456822A (en) * 2020-11-05 2021-03-09 杨恒武 Production process of finished lime

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