CN101830492A - Material recycling method in calcium carbide industry - Google Patents
Material recycling method in calcium carbide industry Download PDFInfo
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- CN101830492A CN101830492A CN201010158236A CN201010158236A CN101830492A CN 101830492 A CN101830492 A CN 101830492A CN 201010158236 A CN201010158236 A CN 201010158236A CN 201010158236 A CN201010158236 A CN 201010158236A CN 101830492 A CN101830492 A CN 101830492A
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Abstract
The invention discloses a material recycling method in the calcium carbide industry, comprising a first recycling method and a second recycling method, wherein the first recycling method comprises the following steps of: consuming calcium oxide to synthesize calcium carbide in a calcium carbide synthesizing workshop; consuming the calcium carbide to synthesize the calcium oxide in an acetylene synthesizing workshop; the second recycling method comprises the following steps of: consuming coke powder to synthesize the calcium carbide in the calcium carbide synthesizing workshop; and consuming the calcium carbide to synthesize the coke powder in the acetylene synthesizing workshop. The material recycling method not only reduces the production cost of the calcium carbide, but also prevents calcium carbide residues from being discharged by utilizing an organic cycle system for waste material discharge in the calcium carbide industry, thereby fundamentally solving the problem of the calcium carbide residue waste materials formed in the calcium carbide industry and making great contribution to an environmental protection career.
Description
Technical field
The present invention relates to the technical field of multipurpose use of three types of wastes, relate in particular to a kind of material recycle method of calcium carbide industry.
Background technology
Calcium carbide, chemical name are carbide of calcium, and molecular formula is CaC
2, be the basic raw material of producing synthetic organic chemical manufacturing industry.The major ingredient of industry calcium carbide is the compound of carbide of calcium and free calcium oxide, carbon, silicon, magnesium, iron, aluminium and a spot of phosphide, sulfide etc.The chemical property of calcium carbide is very active, meets water and produces acetylene gas and calcium hydroxide fierce the decomposition, and emit a large amount of heat.
At present, along with the soaring and domestic increase of international oil price to the polyvinyl chloride demand, the fast development of calcium carbide industry, the market sale price constantly rises.The development of calcium carbide industry must cause the discharging of carbide slag also to increase greatly.A lot of calcium carbide producers are supporting synchronously with carbide slag and cement manufacturing, thereby avoid or reduce pollution.The carbide slag of discharging must be sought new carbide slag and utilize approach as but the cement manufacturing also was difficult to all consume with the momentum of an avalanche.
As application number is 200810068715.5, denomination of invention is in the patent of invention of a kind of carbide slag method of preparing the fine and calcium carbonate superfine powder of different crystal forms, the method that a kind of carbide slag prepares the fine and calcium carbonate superfine powder of different crystal forms is disclosed, this method prepares fine and calcium carbonate superfine powder by calcium chloride and the reaction of pretreated carbide slag; This method is applicable to the chlor-alkali enterprise with Production of PVC line, thus the utilization of waste material that part has solved carbide slag.Yet, for the carbide slag that rolls in, can not tackle the problem at its root.
Summary of the invention
In order to address the above problem; the invention provides a kind of material recycle method of calcium carbide industry; this method is utilized the organic cycle system of calcium carbide industry trash discharge; promptly reduced the production cost of calcium carbide; avoided the discharging of carbide slag again; thereby fundamentally solved the problem of the formed carbide slag waste material of calcium carbide industry, for the environment protection cause has been made huge contribution.
Technical scheme of the present invention is: a kind of material recycle method of calcium carbide industry comprises the first recycle method and the second recycle method;
The described first recycle method is: the calcium oxide in calcium carbide calcination workshop consumes workshop (1) calcination calcium oxide, synthetic calcium carbide; The hydrolysis calcium carbide produces acetylene and carbide slag, and carbide slag is sintered into calcium oxide at calcium oxide production plant (2), consumes workshop (1) thereby calcium oxide is returned calcium oxide, is used to calcine synthetic calcium carbide;
The described second recycle method is: the coke powder in the calcium carbide workshop consumes workshop (3) calcination coke powder, synthetic calcium carbide; The hydrolysis calcium carbide, thus acetylene produced, discharge carbide slag, carbide slag purifies through coke powder production plant (4) and obtains coke powder, returns the calcium carbide workshop again, is used to calcine synthetic calcium carbide;
Wherein, the method that carbide slag is sintered into calcium oxide is: will newly emit carbide slag and slough moisture by whizzer (5), form the dryness carbide slag of water content 20～30%, send into pressure forming machine (6) extrusion molding then, put into again in the incinerator (7) and carry out calcination, the carbide slag powerful dehydration is decomposed, calcination temperature is 580～650 ℃, calcination 4～6 hours after the cooling, only is left 54～58% pure substance, after this pure substance is pulverized through primary crusher (8), promptly get calcium oxide product (20), send into calcium oxide and consume workshop (1), recycle;
Its chemical principle is:
With carbide slag be: carbide slag is modulated into emulsion through purifying the method that obtains the coke powder, is 1: 0.76～1.16 to put into first agitator (9) lining with the good hydrochloric acid of dilution according to the ratio of pure substance quality, carry out chemical reaction completely, obtain the mixed solution of calcium chloride and coke powder, mixed solution gets filtrate and filter cake through suction filter pump (10) suction filtration, filtrate is sent to deep processing, filter cake washs through centrifugal washer (11), moisture eliminator (12) drying, after pulverizer (13) is pulverized, promptly get coke powder (21), coke powder (21) returns coke powder and consumes workshop (3) recycle.
Its chemical principle is: Ca (OH)
2+ C+2HCI==CaCl
2+ H
2O+C;
The method of synthetic calcium carbide is: calcium oxide that will calcination is good in the calcium carbide calcination plant and coke powder are 1: 0.44～0.84 to drop in second agitator (14) and stir according to the ratio of pure substance quality, compression moulding in pressure forming machine (15) then, send into closed electric furnace (16) lining and carry out calcination, calcination temperature is 2000～2500 ℃, sinter into after the molten state, make the material of molten state flow into the cooling of calcium carbide pot (17) lining, cooled material is through the broken machine of calcium carbide crusher (18), wrapping machine (19) packing obtains calcium carbide finished product (22).
Its chemical principle is:
The material recycle method of calcium carbide industry of the present invention has promptly reduced the production cost of calcium carbide, has consumed a large amount of carbide slag waste products again, and the organic cycle that has formed calcium carbide industry waste material is utilized system, has very profound significance.
Description of drawings
Fig. 1: Fig. 1 is the first recycle method and the second recycle method of the material recycle method of calcium carbide industry of the present invention, wherein
1---calcium oxide consumes the workshop, and 2---the calcium oxide production plant,
3---the coke powder consumes the workshop, and 4---coke powder production plant.
Fig. 2: Fig. 2 in the material recycle method of calcium carbide industry of the present invention with carbide slag be sintered into the calcium oxide schema, wherein
5---whizzer, 6---pressure forming machine, 7---incinerator, 8---primary crusher
20---the calcium oxide product.
Fig. 3: Fig. 3 is for purifying the schema that obtains the coke powder with the carbide slag process in the material recycle method of calcium carbide industry of the present invention, wherein
9---agitator, 10---suction filter pump, 11---centrifugal washer,
12---moisture eliminator, 13---pulverizer, 21---coke powder.
Fig. 4: Fig. 4 is the schema of synthetic calcium carbide in the material recycle method of calcium carbide industry of the present invention, wherein
14---agitator, 15---pressure forming machine, 16---the enclosed electric furnace,
17---calcium carbide pot, 18---the calcium carbide crusher, 19---wrapping machine,
22---the calcium carbide finished product.
Embodiment
Be described further and illustrate below in conjunction with the material recycle method of specific embodiment calcium carbide industry of the present invention.
Embodiment one: a kind of material recycle method of calcium carbide industry, comprise the steps, to newly emit carbide slag 1000kg and slough the dryness carbide slag that moisture forms water content 20% by whizzer (5), send into pressure forming machine (6) extrusion molding then, put into again in the incinerator (7) and carry out calcination, the carbide slag powerful dehydration is decomposed, and calcination temperature is 580 ℃; Calcination 4.5 hours, after the cooling, only remaining 58% pure substance 580kg takes out pure substance, after pulverizing through primary crusher (8), promptly gets calcium oxide product 580kg, sends into calcium carbide calcination workshop recycle.
5000kg is modulated into emulsion with carbide slag, is to put into first agitator (9) lining at 1: 0.76 with the good hydrochloric acid of dilution according to the ratio of pure substance quality, carry out chemical reaction completely, obtain the mixed solution of calcium chloride and coke powder, mixed solution gets filtrate and filter cake through suction filter pump (10) suction filtration, filtrate is sent to deep processing, filter cake is after centrifugal washer (11) washing, moisture eliminator (12) drying, pulverizer (13) are pulverized, promptly get 400kg coke powder (21), coke powder (21) returns calcium carbide calcination workshop recycle.
Calcium oxide 500kg that will calcination is good in the calcium carbide calcination plant and coke powder are to drop in second agitator (14) at 1: 0.44 to stir according to the ratio of pure substance quality, compression moulding in pressure forming machine (15) then, send into closed electric furnace (16) lining and carry out calcination, calcination temperature is 2000 ℃, sinter into after the molten state, make the material of molten state flow into the cooling of calcium carbide pot (17) lining, cooled material is through the broken machine of calcium carbide crusher (18), wrapping machine (19) packing obtains 391.1kg calcium carbide finished product (22).
Embodiment two: will newly emit carbide slag 1000kg and slough the dryness carbide slag that moisture forms water content 30% by whizzer (5), send into pressure forming machine (6) extrusion molding then, put in the incinerator (7) again and carry out calcination, the carbide slag powerful dehydration is decomposed, calcination temperature is 650 ℃; Calcination 6 hours, after the cooling, only remaining 54% pure substance 540kg takes out material, after pulverizing through primary crusher (8), promptly gets 540kg calcium oxide product, sends into calcium carbide calcination workshop recycle.
5000kg is modulated into emulsion with carbide slag, is to put into first agitator (9) lining at 1: 1.16 with the good hydrochloric acid of dilution according to the ratio of pure substance quality, carry out chemical reaction completely, obtain the mixed solution of calcium chloride and coke powder, mixed solution gets filtrate and filter cake through suction filter pump (10) suction filtration, filtrate is sent to deep processing, filter cake is after centrifugal washer (11) washing, moisture eliminator (12) drying, pulverizer (13) are pulverized, promptly get 400kg coke powder (21), coke powder (21) returns calcium carbide calcination workshop recycle.
Calcium oxide 500kg that will calcination is good in the calcium carbide calcination plant and coke powder are to drop in second agitator (14) at 1: 0.84 to stir according to the ratio of pure substance quality, compression moulding in pressure forming machine (15) then, send into closed electric furnace (16) lining and carry out calcination, calcination temperature is 2500 ℃, sinter into after the molten state, make the material of molten state flow into the cooling of calcium carbide pot (17) lining, cooled material is through the broken machine of calcium carbide crusher (18), wrapping machine (19) packing obtains 568.89kg calcium carbide finished product (22).
Embodiment three: will newly emit carbide slag 1000kg and slough the dryness carbide slag that moisture forms water content 25% by whizzer (5), send into pressure forming machine (6) extrusion molding then, put in the incinerator (7) again and carry out calcination, the carbide slag powerful dehydration is decomposed, calcination temperature is 600 ℃; Calcination 5 hours, after the cooling, only remaining 56% pure substance 560kg takes out pure substance, after pulverizing through primary crusher (8), promptly gets 560kg calcium oxide product, sends into calcium carbide calcination workshop recycle.
5000kg is modulated into emulsion with carbide slag, is to put into first agitator (9) lining at 1: 0.96 with the good hydrochloric acid of dilution according to the ratio of pure substance quality, carry out chemical reaction completely, obtain the mixed solution of calcium chloride and coke powder, mixed solution gets filtrate and filter cake through suction filter pump (10) suction filtration, filtrate is sent to deep processing, filter cake is after centrifugal washer (11) washing, moisture eliminator (12) drying, pulverizer (13) are pulverized, promptly get 400kg coke powder (21), coke powder (21) returns calcium carbide calcination workshop recycle.
Calcium oxide 500kg that will calcination is good in the calcium carbide calcination plant and coke powder are to drop in second agitator (14) at 1: 0.64 to stir according to the ratio of pure substance quality, compression moulding in pressure forming machine (15) then, send into closed electric furnace (16) lining and carry out calcination, calcination temperature is 2500 ℃, sinter into after the molten state, make the material of molten state flow into the cooling of calcium carbide pot (17) lining, cooled material is through the broken machine of calcium carbide crusher (18), wrapping machine (19) packing obtains 568.89kg calcium carbide finished product (22).
The foregoing description is preferred embodiment of the present invention, is not to be used for limiting the scope of the present invention, so all equivalences of being done with described feature of claim of the present invention and principle change or modify, all should be included within the claim scope of the present invention.
Claims (2)
1. the material recycle method of a calcium carbide industry is characterized in that, comprises the first recycle method and the second recycle method;
The described first recycle method is: the calcium oxide in calcium carbide calcination workshop consumes workshop (1) calcination calcium oxide, synthetic calcium carbide; The hydrolysis calcium carbide produces acetylene and carbide slag, and carbide slag is sintered into calcium oxide at calcium oxide production plant (2), consumes workshop (1) thereby calcium oxide is returned calcium oxide, is used to calcine synthetic calcium carbide;
The described second recycle method is: the coke powder in the calcium carbide workshop consumes workshop (3) calcination coke powder, synthetic calcium carbide; The hydrolysis calcium carbide, thus acetylene produced, discharge carbide slag, carbide slag purifies through coke powder production plant (4) and obtains coke powder, returns the calcium carbide workshop again, is used to calcine synthetic calcium carbide;
Wherein, the method that carbide slag is sintered into calcium oxide is: will newly emit carbide slag and slough moisture by whizzer (5), form the dryness carbide slag of water content 20～30%, send into pressure forming machine (6) extrusion molding then, put into again in the incinerator (7) and carry out calcination, the carbide slag powerful dehydration is decomposed, calcination temperature is 580～650 ℃, calcination 4～6 hours after the cooling, only is left 54～58% pure substance, after this pure substance is pulverized through primary crusher (8), promptly get calcium oxide product (20), send into calcium oxide and consume workshop (1), recycle;
With carbide slag be: carbide slag is modulated into emulsion through purifying the method that obtains the coke powder, is 1: 0.76～1.16 to put into first agitator (9) lining with the good hydrochloric acid of dilution according to the ratio of pure substance quality, carry out chemical reaction completely, obtain the mixed solution of calcium chloride and coke powder, mixed solution gets filtrate and filter cake through suction filter pump (10) suction filtration, filtrate is sent to deep processing, filter cake washs through centrifugal washer (11), moisture eliminator (12) drying, after pulverizer (13) is pulverized, promptly get coke powder (21), coke powder (21) returns coke powder and consumes workshop (3) recycle.
2. the material recycle method of calcium carbide industry as claimed in claim 1, it is characterized in that, the method of synthetic calcium carbide is: calcium oxide that will calcination is good in the calcium carbide calcination plant and coke powder are 1: 0.44～0.84 to drop in second agitator (14) and stir according to the ratio of pure substance quality, compression moulding in pressure forming machine (15) then, send into closed electric furnace (16) lining and carry out calcination, calcination temperature is 2000～2500 ℃, sinter into after the molten state, make the material of molten state flow into the cooling of calcium carbide pot (17) lining, cooled material is through the broken machine of calcium carbide crusher (18), wrapping machine (19) packing obtains calcium carbide finished product (22).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010158236A CN101830492A (en) | 2009-06-08 | 2010-03-24 | Material recycling method in calcium carbide industry |
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|---|---|---|---|
| CN200910040050.1 | 2009-06-08 | ||
| CN201010158236A CN101830492A (en) | 2009-06-08 | 2010-03-24 | Material recycling method in calcium carbide industry |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701205A (en) * | 2012-02-01 | 2012-10-03 | 新疆中泰化学（集团）股份有限公司 | Method for repairing and recycling calcium carbide pot |
| CN105502460A (en) * | 2015-12-18 | 2016-04-20 | 石河子大学 | Method for producing calcium carbide raw materials through carbide slag |
| CN105948092A (en) * | 2016-05-09 | 2016-09-21 | 聂国印 | Recycling method of carbide slag in chlor-alkali industry |
| CN105948049A (en) * | 2016-04-29 | 2016-09-21 | 神雾环保技术股份有限公司 | System and method for producing calcium carbide by utilizing carbide slag |
| CN106006554A (en) * | 2016-07-25 | 2016-10-12 | 神雾环保技术股份有限公司 | System and method for preparing hydrogen-rich gas and calcium carbide by calcium carbide residue |
| CN108264048A (en) * | 2018-01-16 | 2018-07-10 | 北京科技大学 | A kind of method of free carbon in removing transition metal carbides |
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| CN1035097A (en) * | 1988-02-08 | 1989-08-30 | 重庆建筑工程学院 | Use production of calcium oxide of high activity from calcium carbide residue |
| CN1884173A (en) * | 2005-06-24 | 2006-12-27 | 王嘉兴 | Method for combined production of gypsum, active carbon, and copperas by using waste sulfuric acid and carbide slag |
-
2010
- 2010-03-24 CN CN201010158236A patent/CN101830492A/en active Pending
Patent Citations (2)
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|---|---|---|---|---|
| CN1035097A (en) * | 1988-02-08 | 1989-08-30 | 重庆建筑工程学院 | Use production of calcium oxide of high activity from calcium carbide residue |
| CN1884173A (en) * | 2005-06-24 | 2006-12-27 | 王嘉兴 | Method for combined production of gypsum, active carbon, and copperas by using waste sulfuric acid and carbide slag |
Non-Patent Citations (1)
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| 《资源利用及深度加工手册》 19980531 邹宗柏等 "12 由石灰制电石" 中国致公出版社 20 2 , 第1版 1 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701205A (en) * | 2012-02-01 | 2012-10-03 | 新疆中泰化学（集团）股份有限公司 | Method for repairing and recycling calcium carbide pot |
| CN102701205B (en) * | 2012-02-01 | 2014-06-25 | 新疆中泰化学（集团）股份有限公司 | Method for repairing and recycling calcium carbide pot |
| CN105502460A (en) * | 2015-12-18 | 2016-04-20 | 石河子大学 | Method for producing calcium carbide raw materials through carbide slag |
| CN105948049A (en) * | 2016-04-29 | 2016-09-21 | 神雾环保技术股份有限公司 | System and method for producing calcium carbide by utilizing carbide slag |
| CN105948049B (en) * | 2016-04-29 | 2018-01-19 | 神雾环保技术股份有限公司 | A kind of system and method for production of calcium carbide from its residue |
| CN105948092A (en) * | 2016-05-09 | 2016-09-21 | 聂国印 | Recycling method of carbide slag in chlor-alkali industry |
| CN106006554A (en) * | 2016-07-25 | 2016-10-12 | 神雾环保技术股份有限公司 | System and method for preparing hydrogen-rich gas and calcium carbide by calcium carbide residue |
| CN108264048A (en) * | 2018-01-16 | 2018-07-10 | 北京科技大学 | A kind of method of free carbon in removing transition metal carbides |
| CN108264048B (en) * | 2018-01-16 | 2020-08-28 | 北京科技大学 | Method for removing free carbon in transition metal carbide |
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Open date: 20100915 |