CN1085188A - Industrial smoke is used to produce light calcium carbonate and calcium chloride technology - Google Patents
Industrial smoke is used to produce light calcium carbonate and calcium chloride technology Download PDFInfo
- Publication number
- CN1085188A CN1085188A CN 92109937 CN92109937A CN1085188A CN 1085188 A CN1085188 A CN 1085188A CN 92109937 CN92109937 CN 92109937 CN 92109937 A CN92109937 A CN 92109937A CN 1085188 A CN1085188 A CN 1085188A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- gas
- calcium chloride
- calcium carbonate
- reaction
- 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.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
Abstract
A kind of industrial smoke is used to produce light calcium carbonate and calcium chloride technology, and it comprises that flue gas reclaims gas cleaning dedusting and CO
2Three master operations of absorption reaction.Because flue gas directly makes CO in the liming of feeding absorption reactor thermally in this technology behind purifying and dedusting
2Generate lime carbonate with calcium hydroxide reaction, so reaction process is short, speed of response is fast, CO
2The rate of recovery.This process can absorb obnoxious flavour SO in the flue gas simultaneously
2Flue gas is purified fully.In addition, this processing unit is simple, less investment, so it is particularly suitable for purification and CO as medium-sized and small enterprises industrial combustion flue gas
2Reclaim comprehensive utilization technique.
Description
The invention provides a kind of processing method of utilizing the carbonic acid gas in the industrial smoke to produce heavy chemicals such as light calcium carbonate and calcium chloride.This technology not only can be recycled the carbonic acid gas in the industrial smoke, and the industrial discharge flue gas is purified, and reduces the pollution of discharging gas to environment.
With coal, crude oil or natural gas is the industrial enterprise and the civil boiler of crude fuel, gives off a large amount of flue gases.These dischargings mainly contain a large amount of nitrogen, carbon dioxide gas and a spot of carbon monoxide, sulfurous gas and other trace harmful gases in gas, also contain volume of smoke simultaneously in discharging gas.Owing to exist these obnoxious flavoures and dust that environment and air are caused pollution seriously in the industrial discharge flue gas.Pollute for eliminating these, once reported the device and the flow process that are used for purified industrial burning discharge tail gas.But these apparatus and method more complicated, the gas after the processing can not utilize, and therefore limits its application.In addition, close with technology of the present invention also have report recycling industrial discharge gas to obtain CO 2 technology, and for example Chinese patent application is No. 88105938 and No. 87108025.But related technology all needs more equipment, and the purifying carbon dioxide complex technical process.
The purpose of this invention is to provide a kind of method that reclaims carbonic acid gas in the industrial smoke simply, and be used for preparing production light calcium carbonate and calcium chloride.Adopt this technology not only can utilize carbonic acid gas in the industrial smoke, can purify the obnoxious flavour of removing in flue dust and the flue gas to discharging gas again, for example sulfurous gas can reduce the pollution of industrial combustion flue gas to environment effectively.
The method of carbonic acid gas in the recycling industrial smoke that the present invention carries, on existing industrial discharge gas cleaning and recovery carbon dioxide process basis, improve and design, it still fires and comprises the recovery of discharging flue gas, to operations such as separating of carbonic acid gas in the purification of flue gas and dedusting and the flue gas, it is characterized in that the flue gas behind purifying and dedusting, need not separate and it is directly sent in the absorption reactor thermally, CO in the discharging gas
2To react with the liming in the reactor and generate CaCO
3Precipitation, precipitation after filtration, drying can obtain finished light lime carbonate.The SO2 of discharging in the gas can with Ca(OH)
2Reaction generates sl. sol. calcium sulfite with CaCO
3Coprecipitation takes off SO and make to reach in the discharging flue gas
2Discharge flue gas after drawing reactor, CO
2Be absorbed and used SO
2Be absorbed the back and separate, the discharging flue gas is purified fully, be discharged in the air again with discharging gas.If the lime carbonate that utilizes above-mentioned drying to obtain is raw material, adds hydrochloric acid and can obtain industrial chemicals calcium chloride, and, just can obtain the calcium chloride reagent of corresponding purity as long as control the hydrochloric acid purity of using.Therefore, utilize method of the present invention can obtain the higher calcium chloride goods of purity again.Also the carbon dioxide collection that generates behind lime carbonate and the hydrochloric acid reaction can be delivered to and drawn in the reactor as comprehensive utilization, make CO
2Obtain cycle applications.Perhaps with the CO that collects
2Utilize routine techniques to handle as CO
2Raw material sources.The anti-process of celebrating of the present invention can be represented with following chemical reaction equation:
Industrial smoke of the present invention is used to produce light calcium carbonate and the calcium chloride technical process can be represented by Fig. 1.Among the figure: 1, flue gas reclaims; 2, gas cleaning dedusting; 3, CO
2Absorption reactor thermally; 4, CaCO
3Separate; 5, calcium chloride reactor; 6, CO
2Collect and utilize; 7, unslaked lime counteracting tank.
By technology of the present invention shown in Figure 1, specifically industrial combustion discharging flue gas utilization blower fan carries out flue gas recovery 1 by boiler chimney (or exhaust passage), and sends in the gas cleaning fly-ash separator 2.Purifying dust-removing device is an airtight filtration vessel, is provided with the bed filtration plate in the fly-ash separator, and the dirt action in the flue gas is fully leached.Unslaked lime water in counteracting tank 7 is cleared up into liming (as above reaction formula 1), delivers to CO after filtering
2In the absorption reactor thermally 3, discharging gas utilizes the blower fan machine directly to be blown in the lime aqueous solution in the absorption reactor thermally behind purifying dust-removing device 2, makes CO in the discharging gas
2With Ca(OH)
2SO in the gas is discharged in reaction (as above reaction formula 2) simultaneously
2Also be absorbed into (as above reaction formula 3) in the solution, purify and deviate from CO
2, SO
2Gas is discharged in the atmosphere behind reactor.The throw out of reactor 3 is sent into CaCO
3Take filtration or centrifugation to go out CaCO in the separator 4
3, obtain light calcium carbonate by A after drying again.As prepare CuCl
2, with isolated CaCO
2Send in the calcium chloride reactor 5, the hydrochloric acid that adds through purifying reacts 4, and reacted solution is discharged by the B mouth, removes moisture through evaporation again, obtains pureization calcium chloride.Generated reactive gas is through with CO
2Collect 6, can send into CO
2Absorption reactor thermally 3 recycles, and also can be discharged by the C mouth is CO
2Unstripped gas.Above-mentioned reaction is all carried out at normal temperatures and pressures.
Also can be used as an example of the present invention by technical process shown in Figure 1, this technical process is short, and speed of response is fast, CO
2Rate of recovery height, and can absorb obnoxious flavour SO in the flue gas simultaneously
4In addition, above-mentioned processing unit is simple, less investment owing to finish, so this method is particularly suitable for purification and CO as medium-sized and small enterprises industrial combustion discharging gas
2The comprehensive utilization technique that reclaims is easy to apply in industry.
Claims (2)
1, a kind of industrial smoke is used to produce the processing method of light calcium carbonate, comprises the recovery of discharging flue gas, to CO in the purifying and dedusting of flue gas and the flue gas
2Operations such as separation, it is characterized in that the flue gas behind purifying and dedusting, need not separate and Dou its directly send in the absorption reactor thermally that liming is housed, make CO
2With Ca (OH)
2Reaction generates CaCO
3Precipitation obtains light calcium carbonate through separating drying.
2, according to the described processing method of claim 1, it is characterized in that the CaCO that is generated
3Precipitation can directly prepare calcium chloride with hydrochloric acid reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109937 CN1085188A (en) | 1992-09-29 | 1992-09-29 | Industrial smoke is used to produce light calcium carbonate and calcium chloride technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109937 CN1085188A (en) | 1992-09-29 | 1992-09-29 | Industrial smoke is used to produce light calcium carbonate and calcium chloride technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1085188A true CN1085188A (en) | 1994-04-13 |
Family
ID=4944488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92109937 Pending CN1085188A (en) | 1992-09-29 | 1992-09-29 | Industrial smoke is used to produce light calcium carbonate and calcium chloride technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1085188A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331755C (en) * | 2005-12-29 | 2007-08-15 | 上海耀华纳米科技有限公司 | Process for preparing high thixotropic nano calcium carbonate |
| CN102009975A (en) * | 2010-11-30 | 2011-04-13 | 王洪涛 | Process for extracting organic diamond raw carbon |
| CN102718246A (en) * | 2006-08-29 | 2012-10-10 | 耶德研究和发展有限公司 | Methods and apparatuses for decreasing the co2 concentration of a fluid |
| CN102935329A (en) * | 2012-11-29 | 2013-02-20 | 广东大众农业科技股份有限公司 | Method and device for preparing light calcium carbonate by recycling exhaust gas of coal burning boiler |
| CN106000074A (en) * | 2016-06-30 | 2016-10-12 | 大唐华银电力股份有限公司耒阳分公司 | High-efficient purifying device for flue gas of coal-fired power plant and use method thereof |
| CN106167272A (en) * | 2016-02-23 | 2016-11-30 | 瓮福（集团）有限责任公司 | Utilize the method that Phosphate Fertilizer Industry waste water produces feed grade calcium carbonate |
-
1992
- 1992-09-29 CN CN 92109937 patent/CN1085188A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331755C (en) * | 2005-12-29 | 2007-08-15 | 上海耀华纳米科技有限公司 | Process for preparing high thixotropic nano calcium carbonate |
| CN102718246A (en) * | 2006-08-29 | 2012-10-10 | 耶德研究和发展有限公司 | Methods and apparatuses for decreasing the co2 concentration of a fluid |
| US9346684B2 (en) | 2006-08-29 | 2016-05-24 | Yeda Research And Development Co., Ltd. | Methods and apparatuses for decreasing the CO2 concentration of a fluid |
| CN102009975A (en) * | 2010-11-30 | 2011-04-13 | 王洪涛 | Process for extracting organic diamond raw carbon |
| CN102935329A (en) * | 2012-11-29 | 2013-02-20 | 广东大众农业科技股份有限公司 | Method and device for preparing light calcium carbonate by recycling exhaust gas of coal burning boiler |
| CN106167272A (en) * | 2016-02-23 | 2016-11-30 | 瓮福（集团）有限责任公司 | Utilize the method that Phosphate Fertilizer Industry waste water produces feed grade calcium carbonate |
| CN106000074A (en) * | 2016-06-30 | 2016-10-12 | 大唐华银电力股份有限公司耒阳分公司 | High-efficient purifying device for flue gas of coal-fired power plant and use method thereof |
| CN106000074B (en) * | 2016-06-30 | 2018-12-25 | 大唐华银电力股份有限公司耒阳分公司 | A kind of coal-fired plant flue gas high efficiency purification device and its application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4197278A (en) | Sequential removal of sulfur oxides from hot gases | |
| US4369167A (en) | Process for treating stack gases | |
| US5599508A (en) | Flue gas conditioning for the removal of acid gases, air toxics and trace metals | |
| EP2990089B1 (en) | Acidic gas removal using dry sorbent injection | |
| AU2008239727B2 (en) | Process and apparatus for carbon capture and elimination of multi-pollutants in flue gas from hydrocarbon fuel sources and recovery of multiple by-products | |
| US4102982A (en) | Process for treating stack gases | |
| US4859438A (en) | Method for separation of impurities from flowing gas | |
| RU2438761C2 (en) | Method and system for complex dry and wet cleaning of combustion gas | |
| US5624649A (en) | Process for reduction of sulfur dioxide emission from combustion gases combined with production of potassium sulfate | |
| CN102423612B (en) | Method for producing thiosulfate and recovering carbon dioxide by utilizing industrial flue gas | |
| CN1891330A (en) | Method for removing sulfur dioxide from wastegas for making it be a product by circulation of magnesium oxide | |
| EP0217928B1 (en) | Method for the preparation of a bicarbonate sorbent in flue gas desulfurization | |
| US4908195A (en) | Process of purifying exhaust gas | |
| CN111359422A (en) | Efficient dry deacidification device and method for waste incineration flue gas | |
| CN1085188A (en) | Industrial smoke is used to produce light calcium carbonate and calcium chloride technology | |
| EP3257570B1 (en) | Integrated desulfurization and carbon dioxide capture system for flue gases | |
| CN1179780C (en) | Method for purifying high-temp. smoke from garbage incinerator | |
| CA1052980A (en) | Process for the removal of sulfur dioxide from exhaust flue gases | |
| EP0308447A1 (en) | A method for absorbing gaseous components from acidifying flue gases | |
| JP3438545B2 (en) | Adsorbent for exhaust gas treatment and method for treating the adsorbent | |
| CN106390704A (en) | A system for treating sulfur containing flue gas by utilizing sodium sulfite | |
| KR20040067443A (en) | Method for desulfurizing fluegas | |
| CN1428186A (en) | Sodium base or magnesium base wet flue gas desulfurizing system capable of completely recovering by-product without wastes | |
| CN209934450U (en) | Cement kiln tail gas atomizing desulfurization system | |
| CN214635045U (en) | Tail gas purification device for flue gas desulfurization and dust removal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |