CN101100617A - Technique for producing acetylene gas by dry method - Google Patents
Technique for producing acetylene gas by dry method Download PDFInfo
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- CN101100617A CN101100617A CNA2007100135263A CN200710013526A CN101100617A CN 101100617 A CN101100617 A CN 101100617A CN A2007100135263 A CNA2007100135263 A CN A2007100135263A CN 200710013526 A CN200710013526 A CN 200710013526A CN 101100617 A CN101100617 A CN 101100617A
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- calcium carbide
- acetylene gas
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Abstract
A process for producing ethyne by dry method is carried out by: mixing water with calcium acetylide powder in proportion of 1.1-1.9:1, and spraying water on calcium acetylide powders in ethyne generator and hydrolyzing to generate ethyne. Calcium acetylide rate at outlet of residual slag machine is 99.5-99.85 wt%, ethyne recovery rate reaches to 98.5 wt%, water content of calcium acetylide slag is 4-12 wt%, reactive temperature is set between 87-93 deg.C and water content is 75%. It's safe, continuous, simplified and cheap.
Description
Technical field
The present invention relates to a kind of technology of producing acetylene gas by dry method, belong to chemical technology field.
Background technology
At present, domestic PVC production industry generally uses the wet method acetylene generator, and wet production acetylene is the water decomposition calcium carbide of using more than 17 times of theoretical amount, produces acetylene gas.The carbide slag slurries water content that this method produces is 90%, and reaction heat is taken away by residual-slurry water, and 1% solution loss is nearly arranged, and reinforcedly all needs displacement at every turn, thereby the acetylene in the bucket of will draining like this causes extra loss.1 ton of PVC of every production will produce 15 tons of sewage that contain a large amount of sulphur, phosphorus, wherein have only sub-fraction to recycle.The press filtration of carbide slag slurries process becomes the filter cake of water content about 35%, and the highest yield of acetylene is generally 96%.Nearly 1,200 ten thousand tons of the carbide slags that the annual wet production acetylene in the whole nation is discharged, nearly 9,000 ten thousand tons of the carbide slag slurries of generation, this has caused huge pressure to environment, and energy-saving and cost-reducing and decontamination becomes pressing for of PVC industry development.
Summary of the invention
The purpose of this invention is to provide a kind of acetylene yield height, production process is safer, consumption is low, the technology of free of contamination a kind of producing acetylene gas by dry method.
For achieving the above object, the technical solution adopted in the present invention is: a kind of technology of producing acetylene gas by dry method is characterized in that: producing the employed raw material of acetylene gas is:
Calcium carbide powder, water;
The weight proportion of water and calcium carbide powder is: 1.1～1.9: 1;
Described technology is that water is sprayed on the calcium carbide powder in the carbide-feed generator with the mist attitude, and hydrolysis reaction takes place, and produces acetylene gas.
Described technology may further comprise the steps:
The preparation of a, calcium carbide powder: block calcium carbide pulverizing is prepared into calcium carbide powder, is delivered in the feed bin;
Calcium carbide powder in b, the feed bin measures through metering conveyor, is delivered to carbide-feed generator continuously;
C, according to the weight proportion of described water and calcium carbide powder, water enters carbide-feed generator and is sprayed on the calcium carbide powder through the under meter metering, calcium carbide powder generation hydrolysis reaction produces acetylene gas;
The carbide slag of d, generation is discharged continuously by residue extraction machine.
Preparation technology's method of described calcium carbide powder is that described block calcium carbide is through broken, particle diameter is delivered to the coarse fodder storehouse less than the calcium carbide piece of 80mm, centrifugal feeding machine is delivered to crusher with the calcium carbide in the coarse fodder storehouse and pulverizes, calcium carbide after the pulverizing is delivered to change in the sieve strainer through chapelet and filters, and particle diameter enters feed bin less than the calcium carbide powder of 10mm after filtering.
Calcium carbide piece greater than 10mm after described commentaries on classics sieve strainer filters is delivered to crusher, pulverizes once more.
After described feed bin material was full, the calcium carbide powder overflow was to the fines storehouse, and the calcium carbide powder in the fines storehouse enters feed bin through chapelet, commentaries on classics sieve strainer.
The acetylene gas that described carbide-feed generator produces enters washing tower by the venting port of carbide-feed generator, and the washing water in the washing tower enter the spray equipment that is provided with in the washing tower acetylene gas is carried out the spray washing first time after the pressurization of spray water pump.
Secondary spraying washing cooling is carried out on the top that enters washing tower through the acetylene gas after the washing for the first time.
Acetylene gas after the cooling enters positive water seal from washing tower.
Described carbide-feed generator, coarse fodder storehouse, crusher, chapelet, commentaries on classics sieve strainer, feed bin, metering conveyor are connected with nitrogen pipeline.
Beneficial effect: the present invention adopts above technical scheme, has the following advantages:
(1) calcium carbide percent hydrolysis in residue extraction machine exit is 99.5～99.85%, does not give birth to calcium carbide and discharges, and the acetylene yield reaches 98.5%.
(2) water of wanting required for the present invention has only 0.7 ton of/ton PVC, all the other all recycle, the water that is added is useless chlorine bleach liquor, useless clorox reaches balance with dry process required water amount after once recycling, make acetylene reach zero release, save water resources, reduced environmental pollution.
(3) the carbide slag water content of the present invention's generation is 4～12%, can not need to directly apply to manufacture of cement through super-dry, has reduced links such as drying, press filtration, has saved facility investment, equipment working cost and production cost.
(4) because production process is a successive, do not need displacement, the particle diameter of calcium carbide powder is less than 3mm, wherein be the following powder of 1mm more than 70%, can form during at controlling level and expect reliably to seal, prevent that acetylene from overflowing from charging opening greater than 2 meters, simultaneously, equipment room adds nitrogen-sealed, has more increased security; Temperature of reaction is set in 87～93 degree, and the gas phase water content is 75% in the carbide-feed generator, and the concentration of high speed acetylene molecule significantly is lower than wet process technique, thereby more safer than wet method production technique.
The contrast table of drying acetylene production technique and wet method acetylene production process (calculating) with 100,000 tons of PVC/
| The contrast content | The drying acetylene production technique | The wet method acetylene production process |
| The acetylene yield | 98.5％ | 96％ |
| Purity acetylene | 99％ | 99％ |
| Carbide slag is moisture | 4～12％ | 90％ |
| Carbide slag is handled artificial | Do not have | 30 people |
| Carbide slag treatment facility and factory building | Do not have | Invest about 1,000 ten thousand yuan |
| The slag slurry is handled power consumption | Do not have | 770kw |
| Sewage discharge | Do not have | ---- |
| Carbide slag is used to produce cement | Adopt cement produced with the dry method directly to use | With rotary kiln oven dry, about 53 yuan/ton |
| Reinforced | Continuously, no acetylene is discharged | Intermittently, need displacement, have acetylene to discharge |
| Deslagging | Continuously | Intermittently |
| Fault | Stopped reaction immediately | React uncontrollable |
Use acetylene yield height, the production process of explained hereafter of the present invention safer, reduced facility investment, consume low, pollution-free, so have higher social value and economic worth.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing is the structured flowchart of the embodiment of the invention.
Embodiment
1-producer, 2-coarse fodder storehouse, the centrifugal feeding machine of 3-, 4-crusher, 5-chapelet, 6-change sieve strainer, 7-feed bin, 8-push-pull valve, 9-metering conveyor, 10-waterflood pump, 11-flow control valve, 12-under meter, 13-residue extraction machine, 14-spray column, 15-sluicing pipe, 16-washing tower, 17-spray water pump, the positive water seal of 18-, 19-hot water pump, 20-plate-type heat exchanger, 21-fines storehouse
Embodiment 1, a kind of technology of producing acetylene gas by dry method, and production technique may further comprise the steps:
A, block calcium carbide become the particle of particle diameter less than 70mm through coarse breaking, fine crushing, after the electromagnetism deironing, are delivered to coarse fodder storehouse 2 by conveyor again;
Calcium carbide particle in b, the coarse fodder storehouse 2 is delivered to crusher 4 through centrifugal feeding machine 3 and is pulverized, the calcium carbide particle is pulverized, calcium carbide particle after the pulverizing is delivered to change in the sieve strainer 6 through chapelet 5 and filters, calcium carbide powder less than 7mm after filtering enters feed bin 7, after feed bin 7 material are full, the calcium carbide powder overflow is to fines storehouse 21, calcium carbide powder in the fines storehouse 21 enters feed bin 7 through chapelet 5, commentaries on classics sieve strainer 6, change particle diameter that sieve strainer 6 filters out greater than the calcium carbide particle transport of 5mm to crusher 4, pulverize once more;
C, the calcium carbide powder in feed bin 7 are delivered to carbide-feed generator 1 continuously after push-pull valve 8, metering conveyor 9 meterings;
D, factory effluent chlorine bleach liquor through waterflood pump 10, flow control valve 11, under meter 12 meterings after, according to water: calcium carbide powder is that 1.5: 1 ratio enters carbide-feed generator 1 and is sprayed on the calcium carbide powder, and calcium carbide powder generation hydrolysis reaction produces acetylene gas;
E, reaction back temperature are after the acetylene gass of 90 degree come out from the venting port 14 of carbide-feed generator 1, the sluicing pipe 15 that enters washing tower 16 bottoms washs, and the washing water in the washing tower 16 enter the spray equipment that is provided with in the washing tower 16 acetylene gas is carried out the spray washing first time after 17 pressurizations of spray water pump;
F, enter washing tower 16 tops through the acetylene gas of spray washing for the first time and carry out secondary spraying washing cooling, the water of condensation of the water vapor that spray water contains from acetylene gas, spray water utilizes plate-type heat exchanger 20 coolings, recycles by hot water pump 19 then;
Acetylene gas after g, the cooling enters positive water seal 18 from washing tower 16;
H, carbide slag are discharged continuously by residue extraction machine 13.
Carbide-feed generator 1 in the above technological process, coarse fodder storehouse 2, crusher 4, chapelet 5, commentaries on classics sieve strainer 6, feed bin 7, metering conveyor 9 are connected with nitrogen pipeline.
Embodiment 2, a kind of technology of producing acetylene gas by dry method, and production technique may further comprise the steps:
A, block calcium carbide become the particle of particle diameter less than 50mm through coarse breaking, fine crushing, after the electromagnetism deironing, are delivered to coarse fodder storehouse 2 by conveyor again;
Calcium carbide particle in b, the coarse fodder storehouse 2 is delivered to crusher 4 through centrifugal feeding machine 3 and is pulverized, the calcium carbide particle is pulverized, calcium carbide particle after the pulverizing is delivered to change in the sieve strainer 6 through chapelet 5 and filters, calcium carbide powder less than 3mm after filtering enters feed bin 7, after feed bin 7 material are full, the calcium carbide powder overflow is to fines storehouse 21, calcium carbide powder in the fines storehouse 21 enters feed bin 7 through chapelet 5, commentaries on classics sieve strainer 6, change particle diameter that sieve strainer 6 filters out greater than the calcium carbide particle transport of 5mm to crusher 4, pulverize once more;
C, the calcium carbide powder in feed bin 7 are delivered to carbide-feed generator 1 continuously after push-pull valve 8, metering conveyor 9 meterings;
D, factory effluent chlorine bleach liquor through waterflood pump 10, flow control valve 11, under meter 12 meterings after, according to water: calcium carbide powder is that 1.2: 1 ratio enters carbide-feed generator 1 and is sprayed on the calcium carbide powder, and calcium carbide powder generation hydrolysis reaction produces acetylene gas;
E, reaction back temperature are after the acetylene gass of 90 degree come out from the venting port 14 of carbide-feed generator 1, the sluicing pipe 15 that enters washing tower 16 bottoms washs, and the washing water in the washing tower 16 enter the spray equipment that is provided with in the washing tower 16 acetylene gas is carried out the spray washing first time after 17 pressurizations of spray water pump;
F, enter washing tower 16 tops through the acetylene gas of spray washing for the first time and carry out secondary spraying washing cooling, the water of condensation of the water vapor that spray water contains from acetylene gas, spray water utilizes plate-type heat exchanger 20 coolings, recycles by hot water pump 19 then;
Acetylene gas after g, the cooling enters positive water seal 18 from washing tower 16;
H, carbide slag are discharged continuously by residue extraction machine 13.
Carbide-feed generator 1 in the above technological process, coarse fodder storehouse 2, crusher 4, chapelet 5, commentaries on classics sieve strainer 6, feed bin 7, metering conveyor 9 are connected with nitrogen pipeline.
Claims (9)
1, a kind of technology of producing acetylene gas by dry method is characterized in that: producing the employed raw material of acetylene gas is:
Calcium carbide powder, water;
The weight proportion of water and calcium carbide powder is: 1.1～1.9: 1;
Described technology is that water is sprayed on the interior calcium carbide powder of carbide-feed generator (1) with the mist attitude, and hydrolysis reaction takes place, and produces acetylene gas.
2, the technology of a kind of producing acetylene gas by dry method as claimed in claim 1 is characterized in that:
Described technology may further comprise the steps:
The preparation of a, calcium carbide powder: block calcium carbide pulverizing is prepared into calcium carbide powder, is delivered in the feed bin (7);
Calcium carbide powder in b, the feed bin (7) is delivered to carbide-feed generator (1) continuously through metering conveyor (9) metering;
C, according to the weight proportion of described water and calcium carbide powder, water enters carbide-feed generator (1) and is sprayed on the calcium carbide powder through under meter (12) metering, calcium carbide powder generation hydrolysis reaction produces acetylene gas;
The carbide slag of d, generation is discharged continuously by residue extraction machine (13).
3, the technology of a kind of producing acetylene gas by dry method as claimed in claim 2 is characterized in that:
Preparation technology's method of described calcium carbide powder is that described block calcium carbide is through broken, particle diameter is delivered to coarse fodder storehouse (2) less than the calcium carbide piece of 80mm, centrifugal feeding machine (3) is delivered to crusher (4) with the calcium carbide in coarse fodder storehouse (2) and pulverizes, calcium carbide after the pulverizing is delivered to change in the sieve strainer (6) through chapelet (5) and filters, and particle diameter enters feed bin (7) less than the calcium carbide powder of 10mm after filtering.
4, the technology of a kind of producing acetylene gas by dry method as claimed in claim 3 is characterized in that:
Calcium carbide piece greater than 10mm after described commentaries on classics sieve strainer (6) filters is delivered to crusher (4), pulverizes once more.
5, the technology of a kind of producing acetylene gas by dry method as claimed in claim 4, it is characterized in that: after described feed bin (7) material is full, the calcium carbide powder overflow is to fines storehouse (21), and the calcium carbide powder in fines storehouse (21) enters feed bin (7) through chapelet (5), commentaries on classics sieve strainer (6).
6, as the technology of claim 2,3,4,5 one of them described a kind of producing acetylene gas by dry method, it is characterized in that:
The acetylene gas that described carbide-feed generator (1) produces enters washing tower (16) by the venting port (14) of carbide-feed generator (1), and the washing water in the washing tower (16) enter the spray equipment that is provided with in the washing tower (16) acetylene gas is carried out the spray washing first time after spray water pump (17) pressurization.
7, the technology of a kind of producing acetylene gas by dry method as claimed in claim 6 is characterized in that:
Secondary spraying washing cooling is carried out on the top that enters washing tower (16) through the acetylene gas after the washing for the first time.
8, the technology of a kind of producing acetylene gas by dry method as claimed in claim 7 is characterized in that:
Acetylene gas after the cooling enters positive water seal (18) from washing tower (16).
9, the technology of a kind of producing acetylene gas by dry method as claimed in claim 8 is characterized in that: described carbide-feed generator (1), coarse fodder storehouse (2), crusher (4), chapelet (5), commentaries on classics sieve strainer (6), feed bin (7), metering conveyor (9) are connected with nitrogen pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100135263A CN100537723C (en) | 2007-02-08 | 2007-02-08 | A kind of technology of producing acetylene gas by dry method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100135263A CN100537723C (en) | 2007-02-08 | 2007-02-08 | A kind of technology of producing acetylene gas by dry method |
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| CN100537723C CN100537723C (en) | 2009-09-09 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010061152A1 (en) * | 2008-11-28 | 2010-06-03 | Arkema France | Manufacture of vinyl chloride monomer from renewable materials, vinyl chloride monomer thus-obtained, and use |
| CN102030604A (en) * | 2010-10-28 | 2011-04-27 | 国电英力特能源化工集团股份有限公司 | Method for controlling feed amount in dry process acetylene production |
| CN102229817A (en) * | 2011-04-27 | 2011-11-02 | 惠州市久策工业气体有限公司 | Open-type acetylene generator automatic feeding system |
| CN102746086A (en) * | 2012-07-09 | 2012-10-24 | 新疆天业（集团）有限公司 | Technique and device for coproducing carbide slag cement in a dry-method acetylene process |
| WO2013027426A1 (en) | 2011-08-25 | 2013-02-28 | 電気化学工業株式会社 | Calcium carbide granules, process for producing calcium carbide granules, and system for producing calcium carbide granules |
| CN103189477A (en) * | 2010-11-15 | 2013-07-03 | 电气化学工业株式会社 | Acetylene-generating apparatus, method for controlling acetylene-generating apparatus, and method for producing acetylene gas |
| CN104437049A (en) * | 2014-11-12 | 2015-03-25 | 贵州开磷（集团）有限责任公司 | Desulphurization method of coupled symbiosis dual-alkali flue gas |
| CN105254465A (en) * | 2015-10-09 | 2016-01-20 | 安徽华塑股份有限公司 | Waterway closed-loop control process of dry method acetylene generating system |
| CN107827695A (en) * | 2017-11-17 | 2018-03-23 | 李瑞雪 | The method for manufacturing butadiene |
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- 2007-02-08 CN CNB2007100135263A patent/CN100537723C/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010061152A1 (en) * | 2008-11-28 | 2010-06-03 | Arkema France | Manufacture of vinyl chloride monomer from renewable materials, vinyl chloride monomer thus-obtained, and use |
| FR2939132A1 (en) * | 2008-11-28 | 2010-06-04 | Arkema France | MANUFACTURE OF MONOMERIC VINYL CHLORIDE FROM RENEWABLE MATERIALS, MONOMERIC VINYL CHLORIDE OBTAINED AND USE THEREOF |
| CN102030604A (en) * | 2010-10-28 | 2011-04-27 | 国电英力特能源化工集团股份有限公司 | Method for controlling feed amount in dry process acetylene production |
| CN103189477B (en) * | 2010-11-15 | 2016-06-15 | 电化株式会社 | The manufacture method of acetylene generation equipment, the control method of acetylene generation equipment and acetylene gas |
| CN103189477A (en) * | 2010-11-15 | 2013-07-03 | 电气化学工业株式会社 | Acetylene-generating apparatus, method for controlling acetylene-generating apparatus, and method for producing acetylene gas |
| CN102229817B (en) * | 2011-04-27 | 2013-06-05 | 惠州市久策工业气体有限公司 | Open-type acetylene generator automatic feeding system |
| CN102229817A (en) * | 2011-04-27 | 2011-11-02 | 惠州市久策工业气体有限公司 | Open-type acetylene generator automatic feeding system |
| WO2013027426A1 (en) | 2011-08-25 | 2013-02-28 | 電気化学工業株式会社 | Calcium carbide granules, process for producing calcium carbide granules, and system for producing calcium carbide granules |
| CN102746086A (en) * | 2012-07-09 | 2012-10-24 | 新疆天业（集团）有限公司 | Technique and device for coproducing carbide slag cement in a dry-method acetylene process |
| CN102746086B (en) * | 2012-07-09 | 2014-08-27 | 新疆天业（集团）有限公司 | Technique and device for coproducing carbide slag cement in a dry-method acetylene process |
| CN104437049A (en) * | 2014-11-12 | 2015-03-25 | 贵州开磷（集团）有限责任公司 | Desulphurization method of coupled symbiosis dual-alkali flue gas |
| CN104437049B (en) * | 2014-11-12 | 2016-12-07 | 贵州开磷集团股份有限公司 | The double alkali fume desulphurization method of a kind of coupling symbiotic |
| CN105254465A (en) * | 2015-10-09 | 2016-01-20 | 安徽华塑股份有限公司 | Waterway closed-loop control process of dry method acetylene generating system |
| CN107827695A (en) * | 2017-11-17 | 2018-03-23 | 李瑞雪 | The method for manufacturing butadiene |
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| CN100537723C (en) | 2009-09-09 |
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Assignee: Shandong Xinlong Group Co.,Ltd. Assignor: Shouguang Xinlong Electrochemistry Group Polyvinyl Chloride Co., Ltd. Contract fulfillment period: 2009.7.30 to 2019.6.29 contract change Contract record no.: 2009370000376 Denomination of invention: Technique for producing acetylene gas by dry method Granted publication date: 20090909 License type: Exclusive license Record date: 2009.9.29 |
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Effective date of registration: 20100408 Address after: 262700 Shandong Province, Shouguang City Tian Ryu Jin Xinlong Industrial Park Patentee after: Shandong Xinlong Chemical Engineering Group Co. Ltd. Address before: 262700 Shandong Province, Shouguang City Tian Ryu Jin Xinlong Industrial Park Patentee before: Shouguang Xinlong Electrochemistry Group Polyvinyl Chloride Co., Ltd. |
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Effective date of registration: 20130523 Address after: 262700 Shandong Province, Shouguang City Tian Ryu Jin Xinlong Industrial Park Patentee after: Shandong Xinlong Technology Co., Ltd. Address before: 262700 Shandong Province, Shouguang City Tian Ryu Jin Xinlong Industrial Park Patentee before: Shandong Xinlong Chemical Engineering Group Co. Ltd. |