CN102701204B - Method and device for co-producing calcium carbide by coke and lime - Google Patents
Method and device for co-producing calcium carbide by coke and lime Download PDFInfo
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- CN102701204B CN102701204B CN201210180964.XA CN201210180964A CN102701204B CN 102701204 B CN102701204 B CN 102701204B CN 201210180964 A CN201210180964 A CN 201210180964A CN 102701204 B CN102701204 B CN 102701204B
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Abstract
The invention relates to a method and a device for co-producing calcium carbide by coke and lime, wherein the device comprises an electric-arc furnace, a coking furnace and a lime kiln. The upper part of the electric-arc furnace is provided with an electrode, a coke inlet, a lime inlet and a gas outlet. The coking furnace is connected with the coke inlet by conveying equipment, an outlet of the lime kiln is connected with the lime inlet, and the gas outlet is connected with a burning system of the lime kiln. The lime and the coke are heated up to 2000-2200 DEG C in the electric-arc furnace, and are subjected to carbonization reaction to generate the calcium carbide and calcium carbide furnace gas. The un-cooled high-temperature lime in the lime kiln and un-coke quenched high-temperature coke in the coking furnace directly enter into the electric-arc furnace to be reacted to generate the calcium carbide, and the calcium carbide furnace gas is taken as burning fuel in the lime kiln. According to the invention, the coking furnace, the lime kiln and the electric-arc furnace are combined with one another, the high-temperature coke in the coking furnace and the high-temperature lime in the lime kiln are taken as raw materials to produce the calcium carbide, the calcium carbide furnace gas is taken as the fuel of the lime kiln, the energy sources can be sufficiently used, the energy consumption and the power consumption can be reduced, and the production cost of the calcium carbide can be reduced.
Description
Technical field
The invention belongs to chemical production technical field, relate to a kind of production method and device of calcium carbide, be specifically related to production method and the device of a kind of coke, lime coproduction calcium carbide.
Background technology
Carbide of calcium is commonly called as calcium carbide, and carbide of calcium reacts with water and generates acetylene.Acetylene is important industrial chemicals, and mainly for the production of polyvinyl chloride-based, vinyl acetate between to for plastic base and acrylic series product, the more than 70% PVC product of China comes from the acetylene that calcium carbide is produced.The rise in price of petroleum products has stimulated calcium carbide industrial expansion.
Industrial calcium carbide is produced the general fixed bed-arc process that adopts, and the high temperature that utilizes electric arc to produce is heated to 2000～2200 ℃ by the lime in furnace of calcium carbide and coke, and the stop regular hour generates molten state calcium carbide.The calcium carbide furnace gas that production process produces is mainly that CO discharges body of heater from top, and the calcium carbide product of melting is discharged from furnace bottom, through cooling, be broken into product.It is the technical field that is mutually related that lime, coke and calcium carbide are produced, and limestone kiln produces lime, and coking furnace is produced coke, for calcium carbide, produces and supplies raw materials, and calcium carbide production traditionally, lime production and coke production are separate production system.Lime is cooled to normal temperature to need cooling air power consumption from 1200 ℃ of calcining temperatures; Coke is cooled to normal temperature from 950 ℃ of high temperature through processes such as quenchings, needs consumption of power and a large amount of water coolants, not only increases production cost, and causes serious environmental pollution; While producing calcium carbide, raw material calcium carbide and coke need to be heated to 2000 ℃ reacts.Separate production system not only increases transportation cost, and by product and residual heat can utilize mutually, and energy dissipation is large.
Summary of the invention
For making up above-mentioned the deficiencies in the prior art, the invention provides the production method of a kind of coke, lime coproduction calcium carbide, to optimize the calcium carbide technological process of production, reduce the consumption that coke, lime and calcium carbide are produced, reduce calcium carbide production cost and environmental pollution.Another object of the present invention is to provide a kind of device of realizing aforesaid method.
The method that coke of the present invention, lime coproduction calcium carbide are produced, lime and coke are heated to 2000～2200 ℃ in electric arc furnace, carry out carburizing reagent and generate calcium carbide and calcium carbide furnace gas.Limestone kiln enters electric arc furnace without the cooling high temperature lime of cooling zone and coking furnace without the high temperature coke of quenching and react production calcium carbide after mixing tank mixes, and the calcium carbide of generation exports out device through calcium carbide, and calcium carbide furnace gas is made calcinating fuel to limestone kiln.
Coke of the present invention, lime coproduction calcium carbide production equipment, comprise electric arc furnace, and electric arc furnace top is provided with electrode, feed(raw material)inlet and pneumatic outlet, and the bottom of electric arc furnace is provided with calcium carbide outlet.Device is also provided with coking furnace, limestone kiln and mixing tank.In the kiln body in limestone kiln, be provided with preheating zone and calcining zone, limestone kiln lower part outlet is provided with high temperature material lock.Mixing tank is provided with coke entrance and lime entrance, and the outlet at bottom of gas mixture is provided with high temperature material lock.Coking furnace is connected to the coke entrance of mixing tank by handling equipment, the outlet in limestone kiln is connected to the lime entrance of mixing tank, and the outlet of mixing tank is connected to the feed(raw material)inlet of electric arc furnace, and the pneumatic outlet of electric arc furnace is connected to the firing system in limestone kiln.
Limestone kiln is beam-type limekiln, sleeve kiln, arch bridge kiln, Maers Kiln or Xinhua's Maers Kiln, does not get rid of other kiln type.The top, preheating zone of beam-type limekiln is provided with 1～5 suction bar, and calcining zone is provided with 1～5 layer of burning beam, every layer of 1～5 burning beam, and burning beam is provided with burner.Pneumatic outlet is connected to the fuel gas inlet of burning beam.Electric arc furnace is sealed furnace or semi closed stove.Handling equipment is worm conveyor, quenching car, hydraulic drive transfer roller.
Sleeve kiln is provided with combustion chamber, upper inner core, lower inner core and firebridge.Combustion chamber is divided into upper and lower two-layer, and every layer is provided with 3～8 combustion chambers, and same layer combustion chamber is evenly arranged, and upper and lower layer combustion chamber staggered arrangement is connected by firebridge between each combustion chamber and inner core.
The method and apparatus of coking of the present invention, lime coproduction calcium carbide, by coking furnace, limestone kiln, combine with furnace of calcium carbide, utilizing coking furnace without cooling high temperature lime, directly to enter electric arc furnace without the high temperature coke of quenching and limestone kiln carries out carburizing reagent and generates calcium carbide, coke quenching and lime cooling energy consumption and power consumption have been reduced, reduced the energy expenditure that electric arc furnace carbide raw material heats up and needs simultaneously, reduced calcium carbide production cost, optimize the process that calcium carbide is produced, reduced coke and the pollution of lime process of cooling to environment and atmosphere.Coking furnace is not established coke quenching auxiliary, and cooling zone is not established in limestone kiln, has reduced facility investment and the process cost of coking and lime production.Calcium carbide furnace gas, directly as the fuel of limestone kiln calcined limestone, makes full use of the by product that calcium carbide is produced, and reduces energy consumption.Furnace of calcium carbide is combined the trucking costs that can reduce lime and coke with coking furnace, limestone kiln.
Accompanying drawing explanation
Fig. 1 is coke of the present invention, lime coproduction calcium carbide production equipment schematic diagram.
Wherein: 1-limestone kiln, 2-suction bar, 3-preheating zone, 4-burning beam, 5-calcining zone, 6-high temperature material lock, 7-mixing tank, 8-feed(raw material)inlet, 9-electrode, 10-electric arc furnace, 11-coking furnace, 12-handling equipment, 13-pneumatic outlet, the outlet of 14-calcium carbide.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
A kind of coke of the present invention, lime coproduction calcium carbide production equipment, comprise electric arc furnace 10, coking furnace 11, limestone kiln 1 and mixing tank 7, and electric arc furnace is closed vessel furnace.Electric arc furnace top is provided with electrode 9, feed(raw material)inlet 8 and pneumatic outlet 13, and the bottom of electric arc furnace is provided with calcium carbide outlet 14.Limestone kiln is beam-type limekiln, is provided with preheating zone 3 and calcining zone 5 in kiln body, and preheating zone is provided with 2 suction bars 2, and calcining zone is provided with 2 layers of burning beam 4, and upper strata is provided with 3 burning beams, and lower floor is provided with two burning beams, and burning beam is provided with burner.Mixing tank is provided with coke entrance and lime entrance, and the outlet at bottom of gas mixture is provided with high temperature material lock.Coking furnace 11 is connected to the coke entrance of mixing tank by handling equipment 12, handling equipment is worm conveyor.The outlet in limestone kiln is connected to the lime entrance of mixing tank, and the outlet of mixing tank is connected to the feed(raw material)inlet 8 of electric arc furnace, and the pneumatic outlet 13 of electric arc furnace is connected to the fuel gas inlet of limestone kiln burning beam, and calcium carbide outlet is connected to following process system.
The process that coke of the present invention, lime coproduction calcium carbide are produced is that coal carries out coking at coking furnace 11 and generates coke and gas-liquid coke chemicals.Wingdale is sent into limestone kiln 1 through apparatus for feeding, and the high-temperature flue gas after 3 calcinings of preheating zone carries out preheating to limestone material.Material after preheating moves to calcining zone 5, by burner ejection fuel and the combustion air burning of burning beam 4, is calcined, and calcining temperature is 1200 ℃.High temperature lime after calcining enters mixing tank through high temperature material lock 6 and the lime entrance of discharge port.High temperature coke is sent into mixing tank 7 by worm conveyor through coke entrance.The stoichiometric that coke and lime need by production calcium carbide mixes in mixing tank 7, opens the high temperature material lock of mixer outlet mixing raw material is sent into electric arc furnace.Start power supply and carry out electric arc furnace heating and carburizing reagent generation calcium carbide and calcium carbide furnace gas, the carbonation reaction temperature of electric arc furnace heating is 2100 ℃.The calcium carbide of the molten state generating goes out device to post-treatment system through calcium carbide outlet 14, and the calcium carbide furnace gas of generation enters limestone kiln burning beam 4 through pipeline and makes fuel calcined limestone material.The limestone material of the smoke pre-heating preheating zone that calcining produces is discharged to exhaust emission system by suction bar 2.
Claims (6)
1. a coke, lime coproduction calcium carbide production equipment, comprise electric arc furnace (10), electric arc furnace top is provided with electrode (9), feed(raw material)inlet (8) and pneumatic outlet (13), the bottom of electric arc furnace is provided with calcium carbide outlet (14), it is characterized in that: described device is also provided with coking furnace (11), limestone kiln (1) and mixing tank (7); In the kiln body in described limestone kiln, be provided with preheating zone (3) and calcining zone (5), limestone kiln lower part outlet is provided with high temperature material lock (6); Described mixing tank is provided with coke entrance and lime entrance, and the outlet at bottom of mixing tank is provided with high temperature material lock; Coking furnace (11) is connected to the coke entrance of mixing tank by handling equipment (12), the outlet in limestone kiln is connected to the lime entrance of mixing tank, the outlet of mixing tank is connected to the feed(raw material)inlet of electric arc furnace, and the pneumatic outlet of electric arc furnace (13) is connected to the firing system in limestone kiln.
2. the production equipment of coke, lime coproduction calcium carbide according to claim 1, is characterized in that: described limestone kiln is beam-type limekiln, sleeve kiln, arch bridge kiln or Maers Kiln.
3. the production equipment of coke, lime coproduction calcium carbide according to claim 2, it is characterized in that: the top, preheating zone of described beam-type limekiln is provided with 1～5 suction bar (2), calcining zone is provided with 1～5 layer of burning beam (4), every layer of 1～5 burning beam, and burning beam is provided with burner; Described pneumatic outlet (13) is connected to the fuel gas inlet of burning beam.
4. the production equipment of coke, lime coproduction calcium carbide according to claim 2, it is characterized in that: in the kiln body of described sleeve kiln, be provided with combustion chamber, upper inner core, lower inner core and firebridge, described combustion chamber is divided into upper and lower two-layer, every layer is provided with 3～8 combustion chambers, same layer combustion chamber is evenly arranged, upper and lower layer combustion chamber staggered arrangement, is connected by firebridge between each combustion chamber and inner core.
5. the production equipment of coke, lime coproduction calcium carbide according to claim 1, is characterized in that: described electric arc furnace (10) is sealed furnace or semi closed stove.
6. the production equipment of coke, lime coproduction calcium carbide according to claim 1, is characterized in that: described handling equipment (12) is worm conveyor, quenching car, hydraulic drive transfer roller.
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| CN201210180964.XA CN102701204B (en) | 2012-06-05 | 2012-06-05 | Method and device for co-producing calcium carbide by coke and lime |
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| CN201210180964.XA CN102701204B (en) | 2012-06-05 | 2012-06-05 | Method and device for co-producing calcium carbide by coke and lime |
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| CN102701204B true CN102701204B (en) | 2014-11-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102951640B (en) * | 2012-11-12 | 2014-04-09 | 石家庄新华能源环保科技股份有限公司 | Calcium carbide producing device |
| CN104108716B (en) * | 2014-05-19 | 2016-06-01 | 顾君尧 | Calcium carbide cooling forming equipment |
| CN105038708A (en) * | 2015-08-12 | 2015-11-11 | 江苏振宇环保科技有限公司 | Method of producing solid snow-melting agent by utilizing waste marble |
| CN105399346B (en) * | 2015-11-10 | 2017-05-31 | 石家庄新华能源环保科技股份有限公司 | A kind of process units of lime, coke coproduction of calcium carbide |
| CN109095470A (en) * | 2018-07-16 | 2018-12-28 | 安徽华塑股份有限公司 | A kind of furnace of calcium carbide convenient for high activity carbon granule is added |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186316A (en) * | 2007-11-15 | 2008-05-28 | 中国天辰化学工程公司 | Calcium carbide, polyvinyl chloride, soda and chloro-alkaline combined device and method for saving energy, reducing discharge and preparing alkali from waste slag |
| CN101693536A (en) * | 2009-10-22 | 2010-04-14 | 上海宝钢工程技术有限公司 | Hot commissioning test run technology of calcium carbide |
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- 2012-06-05 CN CN201210180964.XA patent/CN102701204B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186316A (en) * | 2007-11-15 | 2008-05-28 | 中国天辰化学工程公司 | Calcium carbide, polyvinyl chloride, soda and chloro-alkaline combined device and method for saving energy, reducing discharge and preparing alkali from waste slag |
| CN101693536A (en) * | 2009-10-22 | 2010-04-14 | 上海宝钢工程技术有限公司 | Hot commissioning test run technology of calcium carbide |
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Address after: 051431 Hebei city of Shijiazhuang province Luancheng douyu town equipment manufacturing base of Xinhua Road No. 6 (douyu West Middle School) Applicant after: Shijiazhuang Xinhua Energy and Environmental Protection Technology Co., Ltd. Address before: 051431 Hebei city of Shijiazhuang province Luancheng douyu town equipment manufacturing base of Xinhua Road No. 6 (douyu West Middle School) Applicant before: Shijiazhuang Xinhua Industrial Furnace Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SHIJIAZHUANG XINHUA INDUSTRIAL FURNACE CO., LTD. TO: SHIJIAZHUANG XINHUA ENERGY ENVIRONMENTAL TECHNOLOGY CO., LTD. |
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