CN101434390A - Method for producing calcium carbide and sulphuric acid using industry by-product gypsum - Google Patents
Method for producing calcium carbide and sulphuric acid using industry by-product gypsum Download PDFInfo
- Publication number
- CN101434390A CN101434390A CNA2008103027532A CN200810302753A CN101434390A CN 101434390 A CN101434390 A CN 101434390A CN A2008103027532 A CNA2008103027532 A CN A2008103027532A CN 200810302753 A CN200810302753 A CN 200810302753A CN 101434390 A CN101434390 A CN 101434390A
- Authority
- CN
- China
- Prior art keywords
- industry
- product gypsum
- calcium carbide
- product
- gypsum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Processing Of Solid Wastes (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a method for producing calcium carbide and a sulphuric acid by using industrial by-product gypsum, which comprises the steps as follows: the industrial by-product gypsum is taken as a raw material and decomposed to sulfur dioxide gas and calcium oxide by being added with carbon materials and through pyroreaction of more than 900 DEG C in a submerged arc type electric furnace; the sulfur dioxide gas is converted to sulfur trioxide after collection and catalytic oxidation, and the sulfur trioxide is absorbed by a dilute sulfuric acid to obtain a concentrated sulfuric acid; and the calcium oxide and the carbon materials are subjected to pyroreaction of 1800 to 2200 DEG C to prepare the calcium carbide. The method produces the calcium carbide and the sulphuric acid by taking the industrial by-product gypsum as the main raw material and adding a certain amount of carbon materials and can realize the resource utilization of the industrial by-product gypsum, thus turning the harmful into the beneficial and changing waste into valuable, and greatly speeding up the resource utilization process of the industrial by-product gypsum in China.
Description
Technical field
The present invention relates to a kind of calcium carbide and vitriolic production method, particularly a kind of with industry by-product gypsum production calcium carbide and vitriolic production method, belong to the technical field of chemical industry.
Background technology
By-product gypsum all in many Production in Chemical Plant processes.For example, produce the phosphogypsum that phosphoric acid phosphate fertilizer process produces, produce the titanium gypsum that the titanium dioxide process produces, the lemon gypsum that production citric acid process produces etc.According to estimates, the chemical fertilizer by-product gypsum has reached 4,000 ten thousand tons, and the phosphogypsum of storing up at present is above 7,500,000 tons.Pile up phosphogypsum and taken a large amount of soils.
At present, the quantity discharged of China's industry by-product gypsum increases year by year, these industry by-product gypsums are used for except part manufacture gypsum brick, plasterboard, the compound manure, the phosphogypsum of most of enterprise does not all also utilize, the storage ash field that much is stacked at industrial gypsum is arranged, not only occupy the soil, caused serious environmental to pollute, and the production of restriction phosphoric acid.In addition, for large-scale phosphoric acid plant, need to drop into substantial contribution especially, take large-area soil and build phosphogypsum slag field to solve the stacking problem of phosphogypsum.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of and produces calcium carbide and vitriolic method with industry by-product gypsum.This method industry by-product gypsum is main raw material electrogenesis in next life stone and sulfuric acid, can realize the recycling of industry by-product gypsum, thereby " turn harm into good, turn waste into wealth ".
For solving the problems of the technologies described above technical scheme of the present invention: produce calcium carbide and vitriolic method with industry by-product gypsum.It is to be raw material with the industry by-product gypsum, by adding carbon materials, through the pyroreaction more than 900 ℃, makes industry by-product gypsum be decomposed into sulfur dioxide gas and calcium oxide in submerged arc formula electric furnace; Sulfur dioxide gas changes sulphur trioxide into behind collection and catalyzed oxidation, sulphur trioxide makes the vitriol oil after absorbing by dilute sulphuric acid; Calcium oxide and carbon materials make calcium carbide again after 1800 ℃～2200 ℃ pyroreaction.
Above-mentioned produces in calcium carbide and the vitriolic method with industry by-product gypsum, and the addition of described industry by-product gypsum and carbon materials is by following weight ratio; 100 parts of industry by-product gypsums, 20～80 parts in carbon.
Aforesaid with in industry by-product gypsum production calcium carbide and the vitriolic method, the addition of described industry by-product gypsum and carbon materials is more preferably by following weight ratio; 100 parts of industry by-product gypsums, 30～60 parts in carbon.
Aforesaid with in industry by-product gypsum production calcium carbide and the vitriolic method, described industry by-product gypsum is the byproducts such as phosphogypsum, desulfurated plaster, titanium gypsum or fluorgypsum that discharge in the industrial production.
Aforesaid with in industry by-product gypsum production calcium carbide and the vitriolic method, described carbon materials can be coke, hard coal or refinery coke.
Beneficial effect of the present invention: it is main raw material that the present invention adopts industry by-product gypsum such as phosphogypsum, desulfurated plaster, titanium gypsum or fluorgypsum etc., obtain calcium carbide and sulfuric acid by adding a certain amount of carbon raw production, realized the recycling of industry by-product gypsum, thereby " turn harm into good, turn waste into wealth ", accelerated the recycling process of China's industry by-product gypsum greatly, can effectively solve present industry by-product gypsum because of can't effectively utilizing a large amount of problems such as the appropriation of land, contaminate environment, the phosphoric acid production that are caused are restricted of stacking.
Embodiment
The present invention is further illustrated below in conjunction with embodiment.
Embodiment 1.Produce calcium carbide and sulfuric acid by following step with industry by-product gypsum.
A, after 100 parts phosphogypsums, 42 parts coke mixed the A product;
B, the A product are added in the submerged arc formula electric furnace (furnace of calcium carbide), the pyroreaction through 950 ℃-1350 ℃ makes phosphogypsum be decomposed into sulfur dioxide gas and calcium oxide;
C, the sulfur dioxide gas that decomposites is collected after catalyzed oxidation changes sulphur trioxide into, promptly made the required vitriol oil after again sulphur trioxide being absorbed by dilute sulphuric acid;
D, will stay calcium oxide in the submerged arc formula electric furnace (furnace of calcium carbide) and the mixture of coke promptly makes calcium carbide again after the pyroreaction about 2000 ℃.
Embodiment 2.Produce calcium carbide and sulfuric acid by following step with industry by-product gypsum.
A, after 100 parts desulfurated plasters, 48 parts hard coal mixed the A product;
B, the A product are added in the submerged arc formula electric furnace (furnace of calcium carbide), the pyroreaction through 900 ℃-1350 ℃ makes desulfurated plaster be decomposed into sulfur dioxide gas and calcium oxide;
C, the sulfur dioxide gas that decomposites is collected after catalyzed oxidation changes sulphur trioxide into, promptly made the required vitriol oil after again sulphur trioxide being absorbed by dilute sulphuric acid;
D, calcium oxide and the anthracitic mixture that will stay in the submerged arc formula electric furnace (furnace of calcium carbide) promptly make calcium carbide again after the pyroreaction about 1900 ℃.
Embodiment 3.Produce calcium carbide and sulfuric acid by following step with industry by-product gypsum.
A, after 100 parts fluorgypsums, 40 parts refinery coke mixed the A product;
B, the A product are added in the submerged arc formula electric furnace (furnace of calcium carbide), the pyroreaction through 1000 ℃-1350 ℃ makes fluorgypsum be decomposed into sulfur dioxide gas and calcium oxide;
C, the sulfur dioxide gas that decomposites is collected after catalyzed oxidation changes sulphur trioxide into, promptly made the required vitriol oil after again sulphur trioxide being absorbed by dilute sulphuric acid;
D, will stay calcium oxide in the submerged arc formula electric furnace (furnace of calcium carbide) and the mixture of refinery coke promptly makes calcium carbide again after the pyroreaction about 2100 ℃.
Claims (5)
- [claim 1] is a kind of produces calcium carbide and vitriolic method with industry by-product gypsum, it is characterized in that: it is to be raw material with the industry by-product gypsum, by adding carbon materials, in submerged arc formula electric furnace,, make industry by-product gypsum be decomposed into sulfur dioxide gas and calcium oxide through the pyroreaction more than 900 ℃; Sulfur dioxide gas changes sulphur trioxide into behind collection and catalyzed oxidation, sulphur trioxide makes the vitriol oil after absorbing by dilute sulphuric acid; Calcium oxide and carbon materials make calcium carbide again after 1800 ℃～2200 ℃ pyroreaction.
- [claim 2] is according to claim 1 produces calcium carbide and vitriolic method with industry by-product gypsum, and it is characterized in that: the addition of described industry by-product gypsum and carbon materials is by following weight ratio; 100 parts of industry by-product gypsums, 20～80 parts in carbon.
- [claim 3] is according to claim 2 produces calcium carbide and vitriolic method with industry by-product gypsum, and it is characterized in that: the addition of described industry by-product gypsum and carbon materials is by following weight ratio; Per 100 parts of industry by-product gypsums add 30～60 parts in carbon.
- [claim 4] according in the claim 1～3 any one describedly produce calcium carbide and vitriolic method with industry by-product gypsum, it is characterized in that: described industry by-product gypsum is phosphogypsum, desulfurated plaster, titanium gypsum or the fluorgypsum that discharges in the industrial production.
- [claim 5] according in the claim 1～3 any one describedly produce calcium carbide and vitriolic method with industry by-product gypsum, it is characterized in that: described carbon materials is coke, hard coal or refinery coke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103027532A CN101434390B (en) | 2008-07-16 | 2008-07-16 | Method for producing calcium carbide and sulphuric acid using industry by-product gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103027532A CN101434390B (en) | 2008-07-16 | 2008-07-16 | Method for producing calcium carbide and sulphuric acid using industry by-product gypsum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101434390A true CN101434390A (en) | 2009-05-20 |
| CN101434390B CN101434390B (en) | 2011-04-20 |
Family
ID=40709050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103027532A Expired - Fee Related CN101434390B (en) | 2008-07-16 | 2008-07-16 | Method for producing calcium carbide and sulphuric acid using industry by-product gypsum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101434390B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583377A (en) * | 2012-01-12 | 2012-07-18 | 瓮福（集团）有限责任公司 | Method for producing calcium carbide by using gypsum and industrial by-product gypsum |
| CN102674351A (en) * | 2012-05-25 | 2012-09-19 | 贵州开磷（集团）有限责任公司 | Method for producing calcium carbide from ardealite |
| CN103058150A (en) * | 2012-12-12 | 2013-04-24 | 刘立文 | Producing method of sulfuric acid by using calcium sulfate under high temperature and high pressure |
| CN103072955A (en) * | 2013-01-08 | 2013-05-01 | 刘立文 | Method for producing sulphuric acid by utilizing calcium sulphate |
| CN105461965A (en) * | 2015-11-30 | 2016-04-06 | 马鞍山泓宇材料科技有限公司 | Preparation method of inorganic filler used in production of wood-plastic material |
| CN106006642A (en) * | 2016-06-27 | 2016-10-12 | 贵州大学 | Method for producing calcium carbide by powdery calcium oxide |
| CN109467059A (en) * | 2018-12-18 | 2019-03-15 | 武汉科技大学 | A kind of Efficient utilization method of gypsum |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041439A (en) * | 2007-03-01 | 2007-09-26 | 武汉理工大学 | Method for preparing grammite and sulfuric acid by employing waste slag phosphogypsum |
-
2008
- 2008-07-16 CN CN2008103027532A patent/CN101434390B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583377A (en) * | 2012-01-12 | 2012-07-18 | 瓮福（集团）有限责任公司 | Method for producing calcium carbide by using gypsum and industrial by-product gypsum |
| CN102674351A (en) * | 2012-05-25 | 2012-09-19 | 贵州开磷（集团）有限责任公司 | Method for producing calcium carbide from ardealite |
| CN102674351B (en) * | 2012-05-25 | 2014-07-09 | 贵州开磷（集团）有限责任公司 | Method for producing calcium carbide from ardealite |
| CN103058150A (en) * | 2012-12-12 | 2013-04-24 | 刘立文 | Producing method of sulfuric acid by using calcium sulfate under high temperature and high pressure |
| CN103058150B (en) * | 2012-12-12 | 2015-03-11 | 刘立文 | Producing method of sulfuric acid by using calcium sulfate under high temperature and high pressure |
| CN103072955A (en) * | 2013-01-08 | 2013-05-01 | 刘立文 | Method for producing sulphuric acid by utilizing calcium sulphate |
| CN103072955B (en) * | 2013-01-08 | 2015-07-08 | 刘立文 | Method for producing sulphuric acid by utilizing calcium sulphate |
| CN105461965A (en) * | 2015-11-30 | 2016-04-06 | 马鞍山泓宇材料科技有限公司 | Preparation method of inorganic filler used in production of wood-plastic material |
| CN106006642A (en) * | 2016-06-27 | 2016-10-12 | 贵州大学 | Method for producing calcium carbide by powdery calcium oxide |
| CN109467059A (en) * | 2018-12-18 | 2019-03-15 | 武汉科技大学 | A kind of Efficient utilization method of gypsum |
| CN109467059B (en) * | 2018-12-18 | 2022-05-24 | 武汉科技大学 | Efficient utilization method of gypsum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101434390B (en) | 2011-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101434390B (en) | Method for producing calcium carbide and sulphuric acid using industry by-product gypsum | |
| CN101580409B (en) | Method for producing potassium sulphate fertilizer by using phosphogypsum | |
| CN104478255A (en) | Magnesium oxysulfate cement containing magnesium oxide desulfurization waste liquor and preparation method thereof | |
| CN103864024B (en) | A kind of method of catalytic decomposition phosphogypsum | |
| CN101041439A (en) | Method for preparing grammite and sulfuric acid by employing waste slag phosphogypsum | |
| CN109734344B (en) | Method for preparing cement retarder by using semi-hydrated phosphogypsum | |
| CN102838154A (en) | Process for producing sulfur and light calcium carbonate from phosphorus gypsum | |
| CN100335406C (en) | Process for producing industrial sulfuric acid using phosphorus gypsum as raw material | |
| CN109626339B (en) | Method for preparing sulfuric acid from gypsum | |
| CN104211105A (en) | Ardealite producing method | |
| CN103466675B (en) | Decomposition method of ardealite | |
| CN107902631A (en) | One kind utilizes hot carbon reduction ardealite coupling thermal activation potash feldspar ore CO2The method of co-production sulfur dioxide and potassium sulfate | |
| CN108070384A (en) | It is a kind of using red mud as acidic soil conditioner of matrix and preparation method thereof | |
| CN101708825B (en) | Method for preparing calcium sulfide by reducing and decomposting gypsum through sulfur | |
| CN103253637A (en) | Method for producing sulfuric acid and calcium oxide by utilizing gypsum | |
| CN1186290C (en) | Method for making brick with slag form smelting magnesium by pidgeon process | |
| CN102976858B (en) | Slow-release phosphate fertilizer regenerated from phosphorus-containing waste residue | |
| CN102757189B (en) | Parameter proportion of slow setting cement for highway construction | |
| CN114702963A (en) | Method for preparing soil conditioner by self-propagating pyrolysis of phosphogypsum and biomass | |
| CN103864023B (en) | A kind of method of ardealite carbonating tail gas reducing and decomposing phosphogypsum | |
| CN107522170B (en) | Calcium sulfate reduction method | |
| CN113501735A (en) | Preparation method of electrolytic manganese slag-based slow release fertilizer | |
| CN104212944A (en) | Hydrated desulfurizing agent and preparation method thereof | |
| CN114477116B (en) | Method for preparing phosphoric acid by using high shear reactor | |
| CN103539185B (en) | A kind of gypsum that utilizes decomposes the method preparing quickened lime |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20170716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |