CN103253716A - New technology of recycling ammonium bicarbonate during production of cobaltosic oxide - Google Patents
New technology of recycling ammonium bicarbonate during production of cobaltosic oxide Download PDFInfo
- Publication number
- CN103253716A CN103253716A CN201310228528XA CN201310228528A CN103253716A CN 103253716 A CN103253716 A CN 103253716A CN 201310228528X A CN201310228528X A CN 201310228528XA CN 201310228528 A CN201310228528 A CN 201310228528A CN 103253716 A CN103253716 A CN 103253716A
- Authority
- CN
- China
- Prior art keywords
- tower
- ammonia
- gas
- bicarbonate
- carbonization
- 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
Images
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
Abstract
A new technology of recycling ammonium bicarbonate during production of cobaltosic oxide is characterized in that weak aqua ammonia generated by treating waste water containing ammonia nitrogen absorbs carbon dioxide generated when cobaltosic oxide is roasted by cobalt carbonate to synthesize an ammonium bicarbonate solution, and the ammonium bicarbonate solution is recycled in a synthesis process of cobalt carbonate. The technology can effectively realize resource recycling of ammonium bicarbonate, lowers the production cost, is energy-saving and environment-friendly, can effectively reduce the labor intensity of related workers, improves the labor efficiency and has better social and economic benefits.
Description
Technical field
The invention belongs to the comprehensive utilization of resources technology in the industrial chemicals preparation field, be specially a kind of novel process for recycle bicarbonate of ammonia in the tricobalt tetroxide production process of utilizing cobaltous carbonate to produce as the feedstock production tricobalt tetroxide.
Background technology
The cobaltosic oxide powder purposes is very extensive, and its purposes comprises voltage dependent resistor, gas sensor sensor, magneticsubstance, ultracapacitor, catalyzer, optical material, anode material for lithium-ion batteries etc.
Preparation method of cobalt oxide is a lot, wherein preparing the production technique of cobaltous carbonate presoma and then calcining preparation tricobalt tetroxide with the ammonium bicarbonate precipitation cobalt chloride solution in wet-precipitated-solid-phase pyrolysis, because this method has the reaction conditions gentleness, technology is simple, product is formed characteristics such as even and purity height, is one of main production method current and one period from now on.
It is existing that cobaltous carbonate-the tricobalt tetroxide Technology is as follows:
The building-up process reaction equation
2CoCl
2+5NH
4HCO
3 = 2CoCO
3↓+4NH
4Cl(L)+3CO
2+3H
2O+NH
3
--------------------①
Waste water concentrates, evaporation, crystallisation process reaction equation
NH
4Cl(L) = NH
4Cl(S)↓ -------------------②
The calcination process reaction equation
3CoCO
3+ 1/2 O
2 = Co
3O
4 + 3CO
2↑ -------------------③
From reaction formula 1. as can be seen, in building-up process, to constantly add new bicarbonate of ammonia, and produce a large amount of ammonium chloride waste-waters; Waste water need be produced qualified discharge behind the solid ammonium chloride product through reaction formula concentrating 2., evaporation, crystallization; The reaction formula 3. a large amount of carbon dioxide greenhouse gas of cobaltous carbonate calcination process generation drains in the atmosphere.
The shortcoming that above-mentioned operational path exists has:
1, needs constantly to add new bicarbonate of ammonia in the building-up process;
2, a large amount of carbon dioxide greenhouse gas of cobaltous carbonate calcination process generation drains in the atmosphere;
3, the ammonia nitrogen resource does not obtain most economical, reasonable use;
4, need dissolved solids bicarbonate of ammonia operation.
Summary of the invention
Technical problem solved by the invention is to provide the novel process of recycle bicarbonate of ammonia in a kind of tricobalt tetroxide production process, to solve the shortcoming in the above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
The novel process of recycle bicarbonate of ammonia in a kind of tricobalt tetroxide production process, utilize the weak ammonia of handling the nitrogen-containing wastewater generation to remove to absorb the carbon dioxide that produces in the cobaltous carbonate calcining tricobalt tetroxide process and come carbonate synthesis hydrogen ammonium solution, and this ammonium bicarbonate soln recirculation is used in the cobaltous carbonate building-up process.Building-up process reaction equation in its Technology is as follows:
2CoCl
2+5NH
4HCO
3 = 2CoCO
3↓+4NH
4Cl(L)+3CO
2↑+3H
2O+NH
3↑ --------①
The calcination process reaction equation
3CoCO
3+ 1/2 O
2 = Co
3O
4 + 3CO
2↑ -------------------②
The wastewater treatment reaction equation
CaO+H
2O=Ca(OH)
2 ----------------③
NH
4Cl(L) + Ca(OH)
2 = CaCl
2 + NH
3↑+ H
2O -------------------④
NH
3+ H
2O=NH
3H
2The O(weak ammonia)-------------------5.
NH
3H
2The O(weak ammonia)+CO
2=NH
4HCO
3(L)-------------------6.
Concrete technical process is described as follows:
1, cobaltous carbonate is synthetic
2CoCl
2+5NH
4HCO
3 = 2CoCO
3↓+4NH
4Cl(L)+3CO
2↑+3H
2O+NH
3↑ --------①
Bicarbonate of ammonia is from the ammonium bicarbonate soln that produces in the wastewater treatment process in the cobaltous carbonate building-up process, and concentration can be regulated and control as required, thereby does not have solid ammonium bicarbonate to dissolve this process.
2, cobaltous carbonate calcining tricobalt tetroxide process
3CoCO
3+ 1/2 O
2 = Co
3O
4 + 3CO
2↑ -------------------②
The reaction that calcination process takes place is constant, yet airtight, the retrieving arrangement that increase carbon dioxide in the calciner reach and reclaim carbon dioxide and use for synthetic fluid bicarbonate of ammonia.
3, wastewater treatment process
A, at first white lime is added water and carry out nitratedly, white lime is converted into sulfide lime, reaction process is as follows:
CaO+H
2O=Ca(OH)
2 ----------------③
B, above-mentioned sulfide lime add reaction tower with the high strength ammonium-chloride wastewater that produces from the cobaltous carbonate building-up process according to the material ratio of calculating and fully react, and the ammonia that utilizes vaporizing extract process react to generate is converted into gaseous state by liquid state and enters water spray absorption unit generation weak ammonia and use for next procedure.
NH
4Cl(L) + Ca(OH)
2 = CaCl
2 + NH
3↑+ H
2O -------------------④
NH
3+ H
2O=NH
3H
2The O(weak ammonia)-------------------5.
4, bicarbonate of ammonia is synthetic
A, carbon dioxide purify, supercharging
The carbon dioxide gas mixture that will reclaim from calcination process, deoxygenation purifies, and oxygen removal process adopts the pressure swing adsorption process deoxygenation in the physics deoxidation method, and in this process, the total technological process of gas is: CO
2Gas mixture be pressurized to through the mixed gas supercharger and advance transformation absorption de-aerator plant, the CO that resolves under the normal pressure under the 0.6MPa
2Gas is again by CO
2Compressor pressurizes is advanced the bicarbonate of ammonia production equipment to 0.3MPa.
Synthesizing of B, bicarbonate of ammonia
Gas flow process: from CO
2The unstripped gas of compressor is introduced into gas-liquid separator, isolate and enter the carbonization king-tower from carbonization king-tower bottom behind the phlegma and ammoniacal liquor carries out carburizing reagent, reacted gas comes out from carbonization king-tower top, enters the ammoniacal liquor reaction in carbonization secondary tower and the secondary tower again from carbonization secondary tower bottom.Gas goes out from the top of carbonization secondary tower then, and the bottom of advancing the ammonia recovery tower again enters the ammonia recovery tower, gas in the ammonia recovery tower with tower in top-down soft water directly contact, reclaim in the gas with ammonia.Last gas comes out from ammonia recovery tower top, enters bubble absorbing tower and absorbs tail gas ammonia in the gas again, goes out the gas of bubble tower discharged to atmosphere.
Ammoniacal liquor flow process: from the weak ammonia of wastewater treatment operation, advance the ammoniacal liquor storage tank.Send into secondary carbonating tower by aqua ammonia pump from the top of secondary carbonating tower again, ammoniacal liquor contacts with from bottom to top gas in secondary carbonating tower, absorbs the CO in the gas
2, absorb CO then
2Ammoniacal liquor extract the top that is sent to main carbonating tower by the carbonization pump out from secondary carbonating tower again and enter the carbonization king-tower, ammoniacal liquor contacts with from bottom to top gas in the carbonization king-tower, with the CO in the gas
2Carry out carburizing reagent and generate bicarbonate of ammonia.Reacted ammonium bicarbonate soln comes out to send the battery limit (BL) at the bottom of the tower of carbonization king-tower, return the reuse of cobaltous carbonate synthesis procedure, and chemical formula can be expressed as:
NH
3H
2The O(weak ammonia)+CO
2=NH
4HCO
3(L)-------------------6..
Advantage of the present invention and beneficial effect are:
1, technological process consumes cheap white lime, ammonia nitrogen in the ammonium chloride solution of high density is converted into ammoniacal liquor, absorb the carbon dioxide that calcination process produces, carbonate synthesis hydrogen ammonium solution, be back to use in the synthesis procedure of cobaltous carbonate, accomplish the resource reutilization of bicarbonate of ammonia, reduced production cost;
2, reduce the discharge of carbon dioxide greenhouse gas amount greatly, carbonic acid gas is turned waste into wealth to be obtained utilizing, for national energy-saving and emission-reduction contribute;
3, cancel the dissolution process of solid ammonium bicarbonate, reduced labour intensity, improved efficiency.
Description of drawings
Fig. 1 is synoptic diagram of the present invention.
Embodiment
Give an actual example below and describe the present invention.
1, cobaltous carbonate is synthetic
2CoCl
2+5NH
4HCO
3 = 2CoCO
3↓+4NH
4Cl(L)+3CO
2↑+3H
2O+NH
3↑ --------①
Reaction equation is constant with old technology in the cobaltous carbonate building-up process, and the technical indicator of cobalt chloride solution and building-up process control is also the same with old technology, but the bicarbonate of ammonia source is just different.Bicarbonate of ammonia in the old technology is from the outsourcing solid ammonium bicarbonate, and need be dissolved in water reaches the concentration solution that technic index requires; The bicarbonate of ammonia of novel process is from the ammonium bicarbonate soln that produces in the wastewater treatment process, and concentration can be regulated and control as required, does not have solid ammonium bicarbonate to dissolve this process.
2, cobaltous carbonate calcining tricobalt tetroxide process
3CoCO
3+ 1/2 O
2 = Co
3O
4 + 3CO
2↑ -------------------②
The reaction that calcination process takes place is constant, and the technical indicator of process control is also the same with old technology; Novel process increases carbon dioxide in calciner airtight, retrieving arrangement reaches and reclaims carbon dioxide and use for synthetic fluid bicarbonate of ammonia.
3, wastewater treatment process
The white lime of A, outside buying at first adds water and carries out nitratedly, and white lime is converted into sulfide lime, and reaction process is as follows:
CaO+H
2O=Ca(OH)
2 ----------------③
B, above-mentioned sulfide lime add reaction tower with the high strength ammonium-chloride wastewater that produces from the cobaltous carbonate building-up process according to the material ratio of calculating and fully react, and the ammonia that utilizes vaporizing extract process react to generate is converted into gaseous state by liquid state and enters water spray absorption unit generation weak ammonia and use for next procedure.
NH
4Cl(L) + Ca(OH)
2 = CaCl
2 + NH
3↑+ H
2O -------------------④
NH
3+ H
2O=NH
3H
2The O(weak ammonia)-------------------5.
4, bicarbonate of ammonia is synthetic
A, carbon dioxide purify, supercharging
The carbon dioxide gas mixture that reclaims from calcination process, because oxygen level is very high, that the ammonia in the stock liquid ammoniacal liquor belongs to is inflammable, easy sudden and violent, inflammable gas, must the carbon dioxide gas mixture deoxygenation be purified elder generation.
Physics deoxygenation---pressure swing adsorption process deoxygenation is adopted in deoxygenation.Transformation absorption deoxygenation is to adsorb under 0.6MPa pressure, resolves O under the normal pressure
2Content drop to the safety index scope below 0.5%, CO
2The rate of recovery can reach more than 85%.
Because CO
2Gas mixture be normal temperature and pressure, so supercharger need be set with CO
2Gas mixture be pressurized to the required pressure of pressure swing adsorption process deoxygenation.
The CO that parses
2Gas is normal pressure, in order to overcome the resistance in the ammonium hydrogencarbonate production process, so need set up carbon dioxide mix gas supercharger, carbon dioxide mix gas is pressurized to 0.30MPa by normal pressure, advances production process again.
The total technological process sketch of gas as shown in Figure 1, it specifically can be expressed as: CO
2Gas mixture be pressurized to through the mixed gas supercharger and advance transformation absorption de-aerator plant, the CO that resolves under the normal pressure under the 0.6MPa
2Gas is again by CO
2Compressor pressurizes is advanced the bicarbonate of ammonia production equipment to 0.3MPa.
Synthesizing of B, bicarbonate of ammonia
Gas flow process: from CO
2The unstripped gas of compressor is introduced into gas-liquid separator, isolate and enter the carbonization king-tower from carbonization king-tower bottom behind the phlegma and ammoniacal liquor carries out carburizing reagent, reacted gas comes out from carbonization king-tower top, enters the ammoniacal liquor reaction in carbonization secondary tower and the secondary tower again from carbonization secondary tower bottom.Gas goes out from the top of carbonization secondary tower then, and the bottom of advancing the ammonia recovery tower again enters the ammonia recovery tower, gas in the ammonia recovery tower with tower in top-down soft water directly contact, reclaim in the gas with ammonia.Last gas comes out from ammonia recovery tower top, enters bubble absorbing tower and absorbs tail gas ammonia in the gas again, goes out the gas of bubble tower discharged to atmosphere.
Ammoniacal liquor flow process: from the weak ammonia of wastewater treatment operation, advance the ammoniacal liquor storage tank.Send into secondary carbonating tower by aqua ammonia pump from the top of secondary carbonating tower again, ammoniacal liquor contacts with from bottom to top gas in secondary carbonating tower, absorbs the CO in the gas
2, absorb CO then
2Ammoniacal liquor extract the top that is sent to main carbonating tower by the carbonization pump out from secondary carbonating tower again and enter the carbonization king-tower, ammoniacal liquor contacts with from bottom to top gas in the carbonization king-tower, with the CO in the gas
2Carry out carburizing reagent and generate bicarbonate of ammonia.Reacted ammonium bicarbonate soln comes out to send the battery limit (BL) at the bottom of the tower of carbonization king-tower, return the reuse of cobaltous carbonate synthesis procedure, and its chemical formula can be expressed as:
NH
3H
2The O(weak ammonia)+CO
2=NH
4HCO
3(L)-------------------6..
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. the novel process of recycle bicarbonate of ammonia in the tricobalt tetroxide production process, it is characterized in that utilizing the weak ammonia of handling the nitrogen-containing wastewater generation to remove to absorb the carbon dioxide that produces in the cobaltous carbonate calcining tricobalt tetroxide process and come carbonate synthesis hydrogen ammonium solution, and this ammonium bicarbonate soln recirculation used in the cobaltous carbonate building-up process, comprise in its operating procedure step:
1), cobaltous carbonate is synthetic;
2), cobaltous carbonate calcining tricobalt tetroxide;
3), wastewater treatment process;
4), bicarbonate of ammonia is synthetic.
2. the novel process of recycle bicarbonate of ammonia in a kind of tricobalt tetroxide production process according to claim 1 is characterized in that the technical process of its wastewater treatment process is as follows:
A, at first white lime is added water and carry out nitratedly, white lime is converted into sulfide lime;
B, above-mentioned sulfide lime add reaction tower with the high strength ammonium-chloride wastewater that produces from the cobaltous carbonate building-up process according to the material ratio and fully react, and the ammonia that utilizes vaporizing extract process react to generate is converted into gaseous state by liquid state and enters water spray absorption unit generation weak ammonia and use for next procedure.
3. the novel process of recycle bicarbonate of ammonia in a kind of tricobalt tetroxide production process according to claim 1 is characterized in that the technical process of the building-up process of its bicarbonate of ammonia is as follows:
A, carbon dioxide purify, supercharging
The carbon dioxide gas mixture that will reclaim from calcination process, deoxygenation purifies, and oxygen removal process adopts the pressure swing adsorption process deoxygenation in the physics deoxidation method, and in this process, the total technological process of gas is:
CO
2Gas mixture be pressurized to through the mixed gas supercharger and advance transformation absorption de-aerator plant, the CO that resolves under the normal pressure under the 0.6MPa
2Gas is again by CO
2Compressor pressurizes is advanced the bicarbonate of ammonia production equipment to 0.3MPa;
Synthesizing of B, bicarbonate of ammonia
Gas flow process: from CO
2The unstripped gas of compressor is introduced into gas-liquid separator, isolate and enter the carbonization king-tower from carbonization king-tower bottom behind the phlegma and ammoniacal liquor carries out carburizing reagent, reacted gas comes out from carbonization king-tower top, enters the ammoniacal liquor reaction in carbonization secondary tower and the secondary tower again from carbonization secondary tower bottom; Gas goes out from the top of carbonization secondary tower then, and the bottom of advancing the ammonia recovery tower again enters the ammonia recovery tower, gas in the ammonia recovery tower with tower in top-down soft water directly contact, reclaim in the gas with ammonia; Last gas comes out from ammonia recovery tower top, enters bubble absorbing tower and absorbs tail gas ammonia in the gas again, goes out the gas of bubble tower discharged to atmosphere;
The ammoniacal liquor flow process: from the weak ammonia of wastewater treatment operation, advance the ammoniacal liquor storage tank, send into secondary carbonating tower by aqua ammonia pump from the top of secondary carbonating tower again, ammoniacal liquor contacts with from bottom to top gas in secondary carbonating tower, absorbs the CO in the gas
2, absorb CO then
2Ammoniacal liquor extract the top that is sent to main carbonating tower by the carbonization pump out from secondary carbonating tower again and enter the carbonization king-tower, ammoniacal liquor contacts with from bottom to top gas in the carbonization king-tower, with the CO in the gas
2Carry out carburizing reagent and generate bicarbonate of ammonia, reacted ammonium bicarbonate soln comes out to send the battery limit (BL) at the bottom of the tower of carbonization king-tower, return the reuse of cobaltous carbonate synthesis procedure.
4. the novel process of recycle bicarbonate of ammonia in a kind of tricobalt tetroxide production process according to claim 1, it is characterized in that, increase airtight, retrieving arrangement that carbon dioxide is arranged in the calciner that described cobaltous carbonate calcining tricobalt tetroxide process is used and reach and reclaim carbon dioxide and use for synthetic fluid bicarbonate of ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228528.XA CN103253716B (en) | 2013-06-09 | 2013-06-09 | New technology of recycling ammonium bicarbonate during production of cobaltosic oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228528.XA CN103253716B (en) | 2013-06-09 | 2013-06-09 | New technology of recycling ammonium bicarbonate during production of cobaltosic oxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103253716A true CN103253716A (en) | 2013-08-21 |
| CN103253716B CN103253716B (en) | 2014-11-19 |
Family
ID=48957997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310228528.XA Active CN103253716B (en) | 2013-06-09 | 2013-06-09 | New technology of recycling ammonium bicarbonate during production of cobaltosic oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103253716B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171885A (en) * | 2019-04-16 | 2019-08-27 | 浙江天能能源科技股份有限公司 | The recovery and treatment method of exhaust gas waste water in lithium ion battery material production |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034904A (en) * | 1988-02-08 | 1989-08-23 | 上海化工设计院 | The method of purifying coke oven gas and getting ammonium hydrogen carbonate as by-product |
| CN101298018A (en) * | 2008-06-04 | 2008-11-05 | 北京卓易天元科技发展有限公司 | Method for absorbing CO2 of stack gas by ammonia water |
| CN101624196A (en) * | 2008-07-10 | 2010-01-13 | 朱作远 | Hydrochloric acid-ammonium salt circulation method phosphorite comprehensive utilization clean production technology |
-
2013
- 2013-06-09 CN CN201310228528.XA patent/CN103253716B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034904A (en) * | 1988-02-08 | 1989-08-23 | 上海化工设计院 | The method of purifying coke oven gas and getting ammonium hydrogen carbonate as by-product |
| CN101298018A (en) * | 2008-06-04 | 2008-11-05 | 北京卓易天元科技发展有限公司 | Method for absorbing CO2 of stack gas by ammonia water |
| CN101624196A (en) * | 2008-07-10 | 2010-01-13 | 朱作远 | Hydrochloric acid-ammonium salt circulation method phosphorite comprehensive utilization clean production technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171885A (en) * | 2019-04-16 | 2019-08-27 | 浙江天能能源科技股份有限公司 | The recovery and treatment method of exhaust gas waste water in lithium ion battery material production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103253716B (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103588226B (en) | A kind ofly supplement with stack gas the method that CO2 prepares soda ash | |
| CN101992015A (en) | Method for sequestering carbon dioxide | |
| CN103537178B (en) | The treatment system of nitrotoleune nitric acid oxidation nitrogen oxide in tail gas and processing method | |
| CN103570046B (en) | Process for preparing high-purity sodium sulfite through sulfuric acid production industrial exhaust | |
| CN110683544A (en) | Method for improving concentration of carbon dioxide in tail gas of lime rotary kiln | |
| CN110813027A (en) | Method and device for removing carbon dioxide from gas flow | |
| CN104907010B (en) | A kind of reactor and application method for strengthening calcium base solid waste mineralising fixation carbon dioxide for ammonia solution system | |
| CN102008880B (en) | Method for realizing integrated desulfurization and denitrification and product recovery based on magnesium-ammonium method | |
| CN109250884A (en) | A kind of biogas slurry high-efficient deamination technique of digested sludge joint pyrohydrolysis | |
| CN104707451A (en) | Method for ammonia-process capture of carbon in flue gas and synthesis of chemical products | |
| CN104138703B (en) | Between/paraphthaloyl chloride produce in waste gas treatment process and device | |
| CN102976359B (en) | Method for producing ammonium sulfate by removing sulfur through ammonia method | |
| CN107021600A (en) | The technique and device of the recovery of biogas slurry ammonia nitrogen and methane purification after pig manure anaerobic fermentation | |
| CN102671523B (en) | Method for fixing light calcium carbonate as CO2 byproduct by using humate and desulfurization gypsum | |
| CN103253716B (en) | New technology of recycling ammonium bicarbonate during production of cobaltosic oxide | |
| KR101388217B1 (en) | Manufacturing apparatus of calcium carbonate | |
| CN112573554A (en) | Carbide slag mineralization fixation of CO2Device and method for preparing fine calcium carbonate | |
| CN205517223U (en) | Flue gas desulfurization zero release money source processing system | |
| CN104030321B (en) | A kind ofly realize production system and the method thereof of comprehensive utilization of resources with Repone K, Sweet natural gas for raw material | |
| CN102008881A (en) | Method for removing carbon dioxide from industrial waste gas | |
| CN104071805B (en) | A kind of industry subtracts the processing method of carbon emission and solid waste comprehensive utilization | |
| CN205556427U (en) | Professional equipment of recovery of natural pond liquid ammonia nitrogen and marsh gas purification technology behind pig manure anaerobic fermentation | |
| CN108821315A (en) | The method and device of thermochemical cycles mineralising CO2 while decomposing H 2O H2 | |
| CN103638808A (en) | Method for enriching carbon dioxide in sugar refinery flue gas by utilizing carbonic anhydrase to catalyze lime milk | |
| CN210480893U (en) | System for preparing desulfurized gypsum by utilizing dry desulfurization ash of social waste acid |
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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 341100 Jiangxi city of Ganzhou province Ganxian County Hongjin Industrial Zone Patentee after: Ganzhou Teng far cobalt new materials Limited by Share Ltd Address before: 341100 Jiangxi city of Ganzhou province Ganxian County Hongjin Industrial Zone Patentee before: Ganzhou Tengyuan Cobalt Industrial Co., Ltd. |