CN101186316A - Calcium carbide, polyvinyl chloride, soda and chloro-alkaline combined device and method for saving energy, reducing discharge and preparing alkali from waste slag - Google Patents
Calcium carbide, polyvinyl chloride, soda and chloro-alkaline combined device and method for saving energy, reducing discharge and preparing alkali from waste slag Download PDFInfo
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- CN101186316A CN101186316A CNA2007101501816A CN200710150181A CN101186316A CN 101186316 A CN101186316 A CN 101186316A CN A2007101501816 A CNA2007101501816 A CN A2007101501816A CN 200710150181 A CN200710150181 A CN 200710150181A CN 101186316 A CN101186316 A CN 101186316A
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- soda ash
- calcium carbide
- soda
- polyvinyl chloride
- acetylene
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention relates to a device and a method thereof that uses calcium carbide, polyvinyl chloride, soda and chlor-alkali in combination to save energy, reduce discharge and produce alkali from waste residue, in particular to the device and the method that uses the exhaust generated from calcium carbide production and the carbide slag generated from acetylene production to produce soda, which comprises a limestone calcinations device, a calcium carbide furnace, an acetylene production device, a polyvinyl chloride synthesizer and a soda generation device, wherein, the acetylene production device is connected with the polyvinyl chloride synthesizer; the carbide slag of the acetylene production device is connected with the soda generation device; the exhaust pipe of the calcium carbide furnace is connected with the limestone calcinations device; the kiln gas decomposed from the limestone calcinations device is connected with the soda generation device. The crude salt, carbon dioxide which is introduced into the soda generation device through a limekiln and carbide slag which introduced into the soda generation device through the acetylene production device are compounded in the soda generation device to synthesize the soda. The invention lowers the production cost and realizes the multistage utilization of energy in an omnidirectional way, which greatly reduces the exhaust of green house gas carbon dioxide and mining, thus achieving the environmental protection and circular economy.
Description
Technical field
The invention belongs to the technology of energy-saving and emission-reduction, waste residue system alkali, make the production of calcium carbide, polyvinyl chloride, soda ash, chlor-alkali become association, the apparatus and method of utilizing the carbide slag of waste gas calcined limestone that furnace of calcium carbide produces and acetylene to produce soda ash.
Background technology
Calcium carbide production is a big power consumer, and the furnace of calcium carbide exhaust gas discharged contains certain calorific value, is worth recycling, and the effective constituent in the waste gas is the raw material that soda ash is produced.
With the calcium carbide is a large amount of carbide slag of raw material production polyvinyl chloride (PVC) discharging, and main component is a calcium hydroxide, consumes water source and resource, does not recycle then contaminate environment, causes the wasting of resources.
Soda ash production needs carbonic acid gas, as the raw material of system alkali; The effective constituent of the gas that discharges in the calcium carbide production can be exchanged into carbonic acid gas through reclaiming, and is used for soda ash production.
Soda ash production needs calcium oxide, is used for reacting with the ammonium chloride of alkali-making mother solution as subsidiary material, to reclaim used ammonia in the reaction process.Workshop section takes place in the acetylene of producing at PVC, and reaction produces the calcium carbide mud that contains Ca (OH) 2, can be used as calcium oxide and uses, and participates in the ammonium chloride reaction in the mother liquor, thereby makes carbide slag obtain comprehensive utilization, and it is turned waste into wealth.
Summary of the invention
The present invention proposes the method for a kind of many device associatings, the comprehensive utilization energy and resource, recovery waste gas waste residue, and it is become the raw material that soda ash is produced, improved energy utilization rate, the resource and the energy obtain multistage utilization, realize reducing discharging and the purpose that increases the economic benefit doulbe-sides' victory.
Technical scheme of the present invention is as follows:
The main association of machinery of the present invention comprises limestone calcination device, furnace of calcium carbide, acetylene generator, polyvinyl chloride synthesizing device and soda ash generating apparatus; Wherein acetylene generator acetylene is connected to Polyvinyl Chloride System, and the carbide slag of acetylene generator is connected to the soda ash generating apparatus; Furnace of calcium carbide discharging feed channel is connected in the limestone calcination device, and the kiln gas that the limestone calcination device decomposes is connected to the soda ash device.
The production method of waste residue system alkali device of the present invention is to import the carbonic acid gas of soda ash generating apparatus 5, the synthetic soda ash of carbide slag that acetylene generator 3 imports soda ash generating apparatus 5 by soda ash generating apparatus 5 by crude salt, limestone kiln 1.
Concrete grammar is as follows:
Limestone kiln 1 is used to adopt the waste gas calcined limestone of furnace of calcium carbide, splits the carbon dioxide off and unslaked lime, and by conduit 6 carbonic acid gas that decomposites is imported in the soda ash device 5, and the unslaked lime that limestone kiln 1 is decomposited by conduit 7 imports in the furnace of calcium carbide 2; Furnace of calcium carbide 2 is used for generating calcium carbide by the unslaked lime reaction that carbon materials and limestone kiln 1 import, and reaction gives off waste gas simultaneously, and this waste gas imports the thermal source of limestone kiln 1 as calcined limestone; The discharging conductance in limestone kiln is gone in the soda ash device 5; Furnace of calcium carbide 2 synthetic calcium carbides import in the acetylene generator 3 by conduit 10, and the carbide slag that acetylene generator is produced imports in the soda ash device 5 by conduit 9; Acetylene generator 3 is used for generating acetylene by the calcium carbide that furnace of calcium carbide 2 imports, and the acetylene that generates is imported in the polyvinyl chloride synthesizing device 4 by conduit 11; Polyvinyl chloride synthesizing device 4 is used for importing chlorine and the hydrogen that chlor-alkali produces by conduit 12, generates vinylchlorid with acetylene reaction, generates polyvinyl chloride through polymerization.
Effect of the present invention is: the present invention utilizes the thermal source of the discharging gas of furnace of calcium carbide as the limestone kiln, and the exhaust in limestone kiln is as the raw material of soda ash; The unslaked lime that produce in the limestone kiln is as the raw material of calcium carbide; The raw material that calcium carbide takes place as acetylene, the acetylene of generation are as the raw material of polyvinyl chloride, and the carbide slag of discharge is as the subsidiary material of soda ash production; Calcium carbide, polyvinyl chloride, soda ash, process of caustic soda are integrated effectively, with independently carry out calcium carbide, polyvinyl chloride, soda ash, process of caustic soda respectively and compare, have and reduce the technology investment cost, the advantage of reduce discharging of waste liquid, the multistage utilization of the energy, utilization of resources, increasing economic efficiency.
The present invention relates generally to soda ash, calcium carbide, PVC, caustic soda field; adopt a kind of process for combination producing; calcium carbide, polyvinyl chloride, soda ash, caustic soda are formed process for combination producing; making calcium carbide process PVC produce no discharging of waste liquid, make the waste gas of calcium carbide production be used as the soda ash raw material, is that the consumption that soda ash is produced reduces; omnibearing reducing production costs; the multistage utilization of the energy reduces the greenhouse gases emission of carbon-dioxide significantly and reduces mining, realizes environment protection and recycling economy.
Description of drawings
Fig. 1: process flow sheet of the present invention.
Embodiment
400,000 tons of/year systems of the comprehensive recovery of carbide slag alkali engineerings are the example explanation:
Technology as shown in Figure 1,400,000 tons of/year carbide slags comprehensively reclaim system alkali design library part editor and reuse, comprise calcium carbide, polyvinyl chloride, soda ash, chlor-alkali device, are the process integration bodies of an associating.Now the raw material requirement in each self-contained system is analyzed as follows:
1. the solvay soda process soda ash basic need amount of producing
1) CaO of soda ash production needs
The production of solvay soda process soda ash needs calcium oxide, is used for reacting with the ammonium chloride of alkali-making mother solution as subsidiary material, and to reclaim used ammonia in the reaction process, soda ash per ton needs 0.900 ton in lime.Independent solvay soda process factory will dispose the limestone kiln, adopts Wingdale and coke proportioning mixed calcining, and lime per ton need add the coke of 100kg and 1.3 tons Wingdale, arrives calcium oxide and carbonic acid gas after calcining.Wherein calcium oxide is sent into distillation workshop section and ammonium chloride reaction, reclaims ammonia; The CO2 that calcining produces is as the raw material of soda ash.
2) CO2 of soda ash production needs
Carbonic acid gas is the raw material that soda ash is produced, and soda ash per ton needs kiln gas 1055Nm3/t alkali, and need carry out dedusting this moment to kiln gas, washing, purifying is handled.
3) salt of soda ash production needs
Salt is the raw material that soda ash is produced, and soda ash per ton needs 1.60 tons of salt, and this raw material needs outsourcing.
2. the calcium carbide basic need amount of producing
Calcium carbide production needs calcium oxide and coke, and calcium carbide per ton needs 950kg lime and 600kg coke, and the high temperature transformation that produces through resistance electric arc in furnace of calcium carbide becomes calcium carbide, the carbon monoxide of emitting simultaneously.
Usually, calcium carbide production need be joined the limestone kiln, and the lime of generation is used for calcium carbide production, and the carbonic acid gas that discharge in the limestone kiln is then entered atmosphere after the dedusting, this moment atmosphere is produced to pollute, and produces Greenhouse effect.
3. the basic need amount of Production of PVC
Generated by polyvinyl chloride by calcium carbide production needs calcium carbide and hydrogenchloride, and hydrogenchloride is obtained by chlorine and the hydrogen reaction that the chlor-alkali device produces; Calcium carbide is used for producing acetylene, PVC per ton production will be with 1.48 tons of calcium carbides and portion water, it is synthetic that the acetylene gas that produces participates in polyvinyl chloride, follow output to contain the carbide slag of Ca (OH) 2 simultaneously, this carbide slag is a bigger problem to Production of PVC, so big quantity discharged pollutes environment, and resource is constituted waste.
The energy consumption height that above product single variety is produced, quantity discharged is big, contaminate environment, product cost height.Analysis-by-synthesis the said products; thinking has general character between these products; interrelated part is arranged; therefore; seek technical scheme a kind of reusable edible, that flow process is reasonable, technology is reliable, production is feasible; reach energy-saving and emission-reduction, reduce cost, protect the purpose of the maximum using of environment, resource, form the recycling economy product chain.
For this reason, invented calcium carbide, polyvinyl chloride, soda ash, chlor-alkali device built up association,, will produce organically and combine, mainly closed the conjuncted following name of doing by certain processing method and equipment:
A device is adopted in the limestone kiln that calcium carbide and soda ash production all need be disposed, called after limestone kiln 1,
With the furnace of calcium carbide called after furnace of calcium carbide 2 of calcium carbide device,
With the acetylene generator called after acetylene of Production of PVC device take place 3,
Synthesizer called after polyvinyl chloride in the Polyvinyl Chloride System is synthesized 4,
The part called after soda ash generating apparatus 5. that delime kiln in the soda ash device is outer
Main association flow process is:
Employing is gone into limestone kiln 1 with the discharging conductance of furnace of calcium carbide 2, splits the carbon dioxide off and unslaked lime, and by conduit 6 carbonic acid gas that decomposites is imported in the soda ash device 5, imports in the furnace of calcium carbide 2 by the unslaked lime of conduit 7 with limestone kiln 1 output; Furnace of calcium carbide 2 synthetic calcium carbides import in the acetylene generator 3 by conduit 10, and the carbide slag that acetylene generator 3 is produced imports in the soda ash device 5 by conduit 9; The acetylene that acetylene generator 3 generates imports in the polyvinyl chloride synthesizing device 4 by conduit 11; Polyvinyl chloride synthesizing device 4 is used for importing chlorine and the hydrogen that chlor-alkali produces by conduit 12, generates vinylchlorid with acetylene reaction, generates polyvinyl chloride through polymerization.
Can simplify Production Flow Chart by above configuration, calcium carbide and the supporting limestone kiln of soda ash can be united two into one, reduced the construction in limestone kiln during soda ash is produced, limestone kiln 1 adopts the discharging gas of furnace of calcium carbide 2 as thermal source, can remove the coke that calcined lime is used in the soda ash production from, the lime that produces with limestone kiln 1 removes to produce calcium carbide, and the residual carbide slag that contains Ca (OH) 2 was used for soda ash device 5 after calcium carbide was got angry, the lime resource of this configuration has obtained twice utilization, has reduced or remitted the carbide slag discharging; And can remove the Wingdale that needs in the soda ash production from.
Its supporting scale is: produce 45 tons of calcium carbides per year, can supporting 300,000 tons of/year polyvinyl chloride, and 400,000 tons of/year soda ash, 270,000 tons of/year chlor-alkalis have following characteristics this moment:
The auxiliary material that the carbide slag of generated by polyvinyl chloride by calcium carbide is produced as soda ash has reduced the discharging of carbide slag.
1. reduced the carbonic acid gas of limestone kiln partial discharge in the calcium carbide production equipment, reduced Greenhouse effect, and made it become the raw material that soda ash is produced.
2.40 ten thousand tons of/year soda ash production equipments can save lime kiln device, save 6,260 ten thousand yuan limestone kiln construction investment, and save soda ash produce in the consumption of 500,000 tons/year in Wingdale.
3.40 ten thousand tons of/year soda ash productions can be saved 40,000 tons of/year coke.
4.40 ten thousand tons of/year soda ash devices have reduced the water yield of 400,000/year cubic meter.
5. can make the soda ash production cost reduce by 109 yuan/ton (working as present value).
Claims (3)
1. a carbide slag is produced the soda ash device, comprises limestone calcination device, furnace of calcium carbide, acetylene generator, polyvinyl chloride synthesizing device and soda ash generating apparatus; It is characterized in that: acetylene generator acetylene is connected to Polyvinyl Chloride System, and the carbide slag of acetylene generator is connected to the soda ash generating apparatus; Furnace of calcium carbide discharging feed channel is connected in the limestone calcination device, and the kiln gas that the limestone calcination device decomposes is connected to the soda ash device.
2. produce the production method of soda ash device by the carbide slag of claim 1, it is characterized in that soda ash generating apparatus (5) imports the carbonic acid gas of soda ash generating apparatus (5), the synthetic soda ash of carbide slag that acetylene generator (3) imports soda ash generating apparatus (5) by crude salt, limestone kiln (1).
3. carbide slag as claimed in claim 2 is produced the method for soda ash, it is characterized in that described method is as follows:
Limestone kiln 1 is used to adopt the waste gas calcined limestone of furnace of calcium carbide, split the carbon dioxide off and unslaked lime, and by conduit (6) carbonic acid gas that decomposites is imported in the soda ash device (5), the unslaked lime that limestone kiln (1) is decomposited by conduit (7) imports in the furnace of calcium carbide (2); The unslaked lime reaction that furnace of calcium carbide (2) is used for importing by carbon materials and limestone kiln (1) generates calcium carbide, and reaction gives off waste gas simultaneously, and this waste gas imports the thermal source of limestone kiln (1) as calcined limestone; The discharging conductance in limestone kiln is gone in the soda ash device (5); Furnace of calcium carbide (2) synthetic calcium carbide imports in the acetylene generator (3) by conduit (10), and the carbide slag that acetylene generator is produced imports in the soda ash device (5) by conduit (9); The calcium carbide that acetylene generator (3) is used for importing by furnace of calcium carbide (2) generates acetylene, and the acetylene that generates is imported in the polyvinyl chloride synthesizing device (4) by conduit (11); Polyvinyl chloride synthesizing device (4) is used for importing chlorine and the hydrogen that chlor-alkali produces by conduit (12), generates vinylchlorid with acetylene reaction, generates polyvinyl chloride through polymerization.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101501816A CN101186316A (en) | 2007-11-15 | 2007-11-15 | Calcium carbide, polyvinyl chloride, soda and chloro-alkaline combined device and method for saving energy, reducing discharge and preparing alkali from waste slag |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101501816A CN101186316A (en) | 2007-11-15 | 2007-11-15 | Calcium carbide, polyvinyl chloride, soda and chloro-alkaline combined device and method for saving energy, reducing discharge and preparing alkali from waste slag |
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| CN101186316A true CN101186316A (en) | 2008-05-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491329A (en) * | 2011-12-09 | 2012-06-13 | 王全祥 | Thermal feeding method and device for calcium carbide furnace |
| CN102701204A (en) * | 2012-06-05 | 2012-10-03 | 石家庄市新华工业炉有限公司 | Method and device for co-producing calcium carbide by coke and lime |
| CN107585968A (en) * | 2017-10-25 | 2018-01-16 | 陕西北元化工集团股份有限公司 | A kind of chlor-alkali brine waste processing system and method |
| CN108262328A (en) * | 2016-12-31 | 2018-07-10 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of calcium carbide precipitator dust processing system |
| US11180371B2 (en) | 2019-04-12 | 2021-11-23 | J. Dustin Hultine | Integrated synthesis of commodity chemicals from waste plastic |
-
2007
- 2007-11-15 CN CNA2007101501816A patent/CN101186316A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491329A (en) * | 2011-12-09 | 2012-06-13 | 王全祥 | Thermal feeding method and device for calcium carbide furnace |
| CN102491329B (en) * | 2011-12-09 | 2013-09-04 | 王全祥 | Thermal feeding method and device for calcium carbide furnace |
| CN102701204A (en) * | 2012-06-05 | 2012-10-03 | 石家庄市新华工业炉有限公司 | Method and device for co-producing calcium carbide by coke and lime |
| CN102701204B (en) * | 2012-06-05 | 2014-11-19 | 石家庄新华能源环保科技股份有限公司 | Method and device for co-producing calcium carbide by coke and lime |
| CN108262328A (en) * | 2016-12-31 | 2018-07-10 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of calcium carbide precipitator dust processing system |
| CN107585968A (en) * | 2017-10-25 | 2018-01-16 | 陕西北元化工集团股份有限公司 | A kind of chlor-alkali brine waste processing system and method |
| CN107585968B (en) * | 2017-10-25 | 2019-10-11 | 陕西北元化工集团股份有限公司 | A kind of chlor-alkali brine waste processing system and method |
| US11180371B2 (en) | 2019-04-12 | 2021-11-23 | J. Dustin Hultine | Integrated synthesis of commodity chemicals from waste plastic |
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Open date: 20080528 |