CN110526245A - A kind of method of sequestration of carbon dioxide and cooperative disposal radioactive waste - Google Patents
A kind of method of sequestration of carbon dioxide and cooperative disposal radioactive waste Download PDFInfo
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- CN110526245A CN110526245A CN201910872606.7A CN201910872606A CN110526245A CN 110526245 A CN110526245 A CN 110526245A CN 201910872606 A CN201910872606 A CN 201910872606A CN 110526245 A CN110526245 A CN 110526245A
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- Prior art keywords
- waste
- slag
- radioactive waste
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/50—Carbon dioxide
- C01B32/55—Solidifying
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/28—Treating solids
- G21F9/30—Processing
Abstract
The invention belongs to carbon captures and Plugging Technology Applied field, and in particular to a kind of method of sequestration of carbon dioxide and cooperative disposal radioactive waste.The described method includes: discarded concrete and active waste residue are placed in closed reactor, grinding aid and water is added, is stood after grinding；It is added radioactive waste and waste fiber in closed reactor, under stirring condition, CO is passed through thereto with constant rate of speed2Gas obtains slurry；Gained slurry is transported by feed-line or car and boat to appropriate place, hydration and hardening in the stratum of specific geological conditions and certain depth is injected.The method of the invention can realize CO2It is permanent cured, and solidify CO2While keep solidified body structure finer and close, advantageously reduce the migration of radioactive waste, help to improve the sealing and delay of radioactive waste, have many advantages, such as that risk is small, at low cost.
Description
Technical field
The invention belongs to carbon captures and Plugging Technology Applied field, and in particular to a kind of sequestration of carbon dioxide simultaneously cooperative disposal radiation
The method of property waste material.
Background technique
The earth earth's surface temperature that is averaged increases 0.74 DEG C in nearly 100 years, thus caused by Melting Glacierss, animals and plants extinction
Etc. frequent natural calamities occur, it is recognized that the key measures of solution greenhouse effects be exactly the gas concentration lwevel controlled in atmosphere.
And along with the increasingly fierce of international competition, in international association mesoclimate problem, often economization, politicization, especially carbon subtract
Row's problem becomes the political tool to press between country.
China is the big country of coal production in the world and consumption, according to China's energy development trend, China CO2Discharge amount will
It is necessarily more than that the U.S. becomes the first big carbon emission state in the world.As it can be seen that actual environment, international community's carbon emission reduction in climatic deterioration
Pressure and the multi-party factor such as domestic energy development situation under the influence of, China reinforces the research and development of related low-carbon technology to reduce carbon row
It is high-volume extremely urgent.
Domestic develop at this stage for carbon dioxide sequestration technology is more delayed relative to the capture technique development of carbon dioxide
Slowly, the research achievement of formation and few.CN104891878B discloses a kind of cement base carbon dioxide solidification agent and its preparation side
Method, each ingredient and mass ratio include ground slag 29.4%~46.7%, cement 11.8%~26.7%, and water 34.9%~
44.1%, foaming agent 0.8%~1.8%, desulfurized gypsum 1.2%~3.3%, MgO 0.5%~2.7%, although can solidify
Carbon dioxide, but still cement is used, CO2 emission can be promoted.CN10470995A discloses a kind of fly ash base titanium dioxide
Carbon curing agent and preparation method thereof is made of flyash, calcium hydroxide and aluminium oxide by weight 3~4.5:1.5~3:2, fine coal
Grey activity is low, and solidified carbon dioxide effect is weaker.CN103030166B discloses the system and method for carbon dioxide solidification, passes through
The extracting solution that ammonium salt solvent, acetic acid solvent etc. are extracted as extraction solution supplied to steel slag or natural minerals to the ingredient containing Ca, with
Carbon dioxide, which steadily reacts, is converted to and is cured as carbonate (mineral facies), can preferable solidified carbon dioxide, but extract
There is difficult removing in liquid, solution causes secondary pollution.
Summary of the invention
The present invention is in view of the deficiencies of the prior art, and it is an object of the present invention to provide a kind of sequestration of carbon dioxide and cooperative disposal radioactivity
The method of waste material.
For achieving the above object, the technical scheme adopted by the invention is as follows:
A kind of method of sequestration of carbon dioxide and cooperative disposal radioactive waste, includes the following steps:
(1) discarded concrete and active waste residue are placed in closed reactor, grinding aid and water is added, is stood after grinding；
(2) radioactive waste and waste fiber are added in closed reactor, under stirring condition, thereto with constant rate of speed
It is passed through CO2Gas obtains slurry；
(3) slurry obtained by step (2) is transported by feed-line or car and boat to appropriate place, injects specific geological conditions
And hydration and hardening in the stratum of certain depth.
In above scheme, each component is by weight percentage are as follows: and 15~24 parts of discarded concrete, active waste residue 60~
86 parts, grinding aid 1~2.5,30~46 parts of water, 10~18 parts of radioactive waste, 0.5~2 part of waste fiber.
In above scheme, each component of the activity waste residue is calculated as according to mass percent: slag 50%~75%, steel slag
10%~15%, phosphorus slag 15%~35%.
In above scheme, the slag, steel slag, phosphorus slag are wet waste discharge slag after Water Quenching；The slag reactivity index
>=95%, activity of steel slag index >=80%, reactivity of phosphor slag index >=75%.
In above scheme, the discarded concrete main component is hydrolysis product of cement and sandy aggregate, and partial size is less than
4.8mm。
In above scheme, the radioactive waste is selected from one or more of: after the medical wastes incineration that hospital generates
Flying dust, the sewage that generates of the lime-ash after the dangerous waste incineration that generates of factory, school and R&D institution generates after processing
Sludge.
In above scheme, the waste fiber is to appoint in discarded natural fiber, glass fibre or synthetic polymeric fibers
It anticipates one kind.
In above scheme, step (2) the logical CO2The concrete operations of gas are as follows: ventilation 5min~8min, stop the supple of gas or steam 10min
~15min is repeated 3~6 times.
In above scheme, the grinding aid be triethanolamine class or polyalcohols grinding aid.
In above scheme, the closed reactor is vertical frequency conversion agitator mill.
The hydrolysis product of cement C-S-H and Ca (OH) of discarded concrete in the present invention2Equal ingredients and CO2It reacts to be formed
Stable metal carbonate has risk small, at low cost, it can be achieved that CO2It is permanent cured；And in water environment particle in suspension
In be evenly distributed, CO2Bubble dispersion effect improves, improve the residence time of Gas-liquid interfacial area, bubble in the liquid phase with
And gas transfer effect, to accelerate reaction process.Active waste residue is not merely the fine of particle during the grinding process, is also related to
And internal bond strength, the lattice in molecular structure level are constantly destroyed, and promote the leaching of alkali in active waste residue, and particle table
Face forms many unsaturated bonds, and the gross energy of the surface-active and system that make particle is continuously increased, can direct hydration and hardening, do not have to
Addition cement reduces secondary pollution.The products such as the calcium carbonate that solidified carbon dioxide is formed expand material volume, can subtract
Few porosity, it helps the delay of radioactive waste, and carburizing reagent can reduce pH value, reduce certain defined metals
Mobility.Carburizing reagent forms layer protecting film on waste fiber surface in the present invention, reduces slurry to the chemistry of fiber
Corrosion function guarantees micro- arrangement of reinforcement that fiber plays the role of making micro-crack to disperse, has blocked the development of micro-crack, thus delay by
The generation of drawing crack line improves density and the impervious spilling for reducing radioactive waste.
Beneficial effects of the present invention: the method for the invention has many advantages, such as that risk is small, at low cost, it can be achieved that CO2Forever
Solidification long, and solidify CO2While keep solidified body structure finer and close, advantageously reduce the migration of radioactive waste, facilitate
Improve the sealing and delay of radioactive waste；Greenhouse effects can be alleviated using the method for the invention sequestration of carbon dioxide, and
And it is difficult to solve radioactive waste processing, it is at high cost the problems such as, may advantageously facilitate harmony between man and nature coexistence.
Detailed description of the invention
Fig. 1 is closed reactor schematic diagram.
Specific embodiment
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to the following examples.
In following embodiment, the discarded concrete main component is hydrolysis product of cement and sandy aggregate, and partial size is
4.2mm；Slag described in the activity waste residue, steel slag, phosphorus slag are wet waste discharge slag after Water Quenching, moisture content 12.8%,
Slag reactivity index is 96%, and activity of steel slag index is 85%, and reactivity of phosphor slag index is 75%；The grinding aid be three ethyl alcohol
Amine or polyalcohols grinding aid；The closed reactor is vertical frequency conversion agitator mill.
Embodiment 1
A kind of method of sequestration of carbon dioxide and cooperative disposal radioactive waste, includes the following steps:
(1) 15 parts of discarded concretes and 60 parts of active waste residues are placed in closed reactor, the grinding aid that 1 part of add weight number
With 30 parts of water, grind 1h after stand；The component and content of the activity waste residue are calculated as according to mass percent: slag 50%, steel
Slag 15%, phosphorus slag 35%；
(2) parts by weight are added in closed reactor is 10 parts of radioactive wastes and 0.5 part of waste fiber, is stirred again
It mixes, and CO is passed through thereto with constant rate of speed2Gas, ventilate 5min, stops 10min, in triplicate,；The radioactive waste is
Lime-ash after the dangerous waste incineration that factory generates；The waste fiber is discarded natural fiber；
(3) by gained slurry in step (2) according to GB14569.1-2011 " low, middle level radioactive waste solidified body
Can require " sample is prepared, service check is carried out, testing result is as shown in table 1, and the result of table 1 is illustrated using at the method
Solidification of radwaste standard requirements can be met by setting radioactive material, and have preferable carbon sequestration effect.
1 performance test results of table
Embodiment 2
A kind of method of sequestration of carbon dioxide and cooperative disposal radioactive waste, includes the following steps:
(1) 24 parts of discarded concretes and 86 parts of active waste residues are placed in closed reactor, the grinding aid that 2.5 parts of add weight number
Agent and 46 parts of water are stood after grinding 1h；The component and content of the activity waste residue are calculated as according to mass percent: slag 75%,
Steel slag 10%, phosphorus slag 15%；
(2) parts by weight are added in closed reactor is 18 parts of radioactive wastes and 2 parts of waste fibers, is again stirring for,
And CO is passed through thereto with constant rate of speed2Gas, ventilate 5min, stops 10min, in triplicate,；The radioactive waste is hospital
Flying dust after the medical wastes incineration of generation；The waste fiber is discarded glass fibre；
(3) by gained slurry in step (2) according to GB14569.1-2011 " low, middle level radioactive waste solidified body
Can require " sample is prepared, service check is carried out, testing result is as shown in table 2, and the result of table 2 is illustrated using at the method
Solidification of radwaste standard requirements can be met by setting radioactive material, and have preferable carbon sequestration effect.
2 performance test results of table
Embodiment 3
A kind of method of sequestration of carbon dioxide and cooperative disposal radioactive waste, includes the following steps:
(1) 20 parts of discarded concretes and 75 parts of active waste residues are placed in closed reactor, the grinding aid that 1.5 parts of add weight number
Agent and 33 parts of water are stood after grinding 1h；The component and content of the activity waste residue are calculated as according to mass percent: slag 70%,
Steel slag 10%, phosphorus slag 20%；
(2) parts by weight are added in closed reactor is 15 parts of radioactive wastes and 1.5 parts of waste fibers, is stirred again
It mixes, and CO is passed through thereto with constant rate of speed2Gas, ventilate 5min, stops 10min, in triplicate,；The radioactive waste is
The sludge that the sewage treatment that R&D institution generates generates；The waste fiber is discarded synthetic polymeric fibers；
(3) by gained slurry in step (2) according to GB14569.1-2011 " low, middle level radioactive waste solidified body
Can require " sample is prepared, service check is carried out, testing result is as shown in table 3, and the result of table 3 is illustrated using at the method
Solidification of radwaste standard requirements can be met by setting radioactive material, and have preferable carbon sequestration effect.
3 performance test results of table
Embodiment 4
A kind of method of sequestration of carbon dioxide and cooperative disposal radioactive waste, includes the following steps:
(1) 20 parts of discarded concretes and 75 parts of active waste residues are placed in closed reactor, the grinding aid that 1.5 parts of add weight number
Agent and 37 parts of water are stood after grinding 1h；The component and content of the activity waste residue are calculated as according to mass percent: slag 70%,
Steel slag 15%, phosphorus slag 15%；
(2) parts by weight are added in closed reactor is 15 parts of radioactive wastes and 1.5 parts of waste fibers, is stirred again
It mixes, and CO is passed through thereto with constant rate of speed2Gas, ventilate 5min, stops 10min, in triplicate,；The radioactive waste is
Lime-ash after the dangerous waste incineration that factory generates；The waste fiber is discarded natural fiber；
(3) by gained slurry in step (2) according to GB14569.1-2011 " low, middle level radioactive waste solidified body
Can require " sample is prepared, service check is carried out, testing result is as shown in table 4, and the result of table 4 is illustrated using at the method
Solidification of radwaste standard requirements can be met by setting radioactive material, and have preferable carbon sequestration effect.
4 performance test results of table
Embodiment 5
A kind of method of sequestration of carbon dioxide and cooperative disposal radioactive waste, includes the following steps:
(1) 20 parts of discarded concretes and 75 parts of active waste residues are placed in closed reactor, the grinding aid that 1.5 parts of add weight number
Agent and 41 parts of water are stood after grinding 1h；The component and content of the activity waste residue are calculated as according to mass percent: slag 60%,
Steel slag 10%, phosphorus slag 30%；
(2) parts by weight are added in closed reactor is 15 parts of radioactive wastes and 1.5 parts of waste fibers, is stirred again
It mixes, and CO is passed through thereto with constant rate of speed2Gas, ventilate 5min, stops 10min, in triplicate,；The radioactive waste is
The sludge that the sewage treatment that school generates generates；The waste fiber is discarded natural fiber；
(3) by gained slurry in step (2) according to GB14569.1-2011 " low, middle level radioactive waste solidified body
Can require " sample is prepared, service check is carried out, testing result is as shown in table 5, and the result of table 5 is illustrated using at the method
Solidification of radwaste standard requirements can be met by setting radioactive material, and have preferable carbon sequestration effect.
5 performance test results of table
Obviously, above-described embodiment is only intended to clearly illustrate made example, and is not the limitation to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.Therefore the obvious changes or variations amplified
Within the protection scope of the invention.
Claims (10)
1. a kind of method of sequestration of carbon dioxide and cooperative disposal radioactive waste, which comprises the steps of:
(1) discarded concrete and active waste residue are placed in closed reactor, grinding aid and water is added, is stood after grinding；
(2) it is added radioactive waste and waste fiber in closed reactor, under stirring condition, is passed through thereto with constant rate of speed
CO2Gas obtains slurry；
(3) slurry obtained by step (2) is transported by feed-line or car and boat to appropriate place, injects specific geological conditions and spy
Hydration and hardening in the stratum of depthkeeping degree.
2. the method according to claim 1, wherein each component is by weight percentage are as follows: discarded coagulation
15 ~ 24 parts of soil, active 60 ~ 86 parts of waste residue, grinding aid 1 ~ 2.5,30 ~ 46 parts of water, 10 ~ 18 parts of radioactive waste, waste fiber 0.5
~ 2 parts.
3. the method according to claim 1, wherein each component of the activity waste residue is according to mass percent meter
Are as follows: slag 50% ~ 75%, steel slag 10% ~ 15%, phosphorus slag 15% ~ 35%.
4. according to the method described in claim 3, it is characterized in that, the slag, steel slag, phosphorus slag are wet row after Water Quenching
Waste residue；Slag reactivity index >=95%, activity of steel slag index >=80%, reactivity of phosphor slag index >=75%.
5. the method according to claim 1, wherein the discarded concrete main component is hydrolysis product of cement
And sandy aggregate, partial size are less than 4.8mm.
6. the method according to claim 1, wherein the radioactive waste is selected from one or more of: doctor
Lime-ash, school and R&D institution after the dangerous waste incineration that flying dust, factory after the medical wastes incineration that institute generates generate produce
The sludge that raw sewage generates after processing.
7. the method according to claim 1, wherein the waste fiber is discarded natural fiber, glass fibers
Any one in dimension or synthetic polymeric fibers.
8. the method according to claim 1, wherein step (2) the logical CO2The concrete operations of gas are as follows: ventilation
5min ~ 8min, stop the supple of gas or steam 10min ~ 15min, repeats 3 ~ 6 times.
9. the method according to claim 1, wherein it is that triethanolamine class or polyalcohols help that the grinding aid, which is,
Grinding agent.
10. the method according to claim 1, wherein the closed reactor is vertical frequency conversion agitator mill.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113955992A (en) * | 2021-10-28 | 2022-01-21 | 山东汉博昱洲新材料有限公司 | Efficient carbon-absorbing mineralized aerated concrete and preparation method thereof |
| CN114956750A (en) * | 2022-06-27 | 2022-08-30 | 中国矿业大学 | Full-solid waste mine filling carbon sealing paste and preparation method thereof |
| CN116689459A (en) * | 2023-07-24 | 2023-09-05 | 三碳(安徽)科技研究院有限公司 | Solid waste treatment method for absorbing carbon dioxide and belt type solid waste treatment equipment |
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Application publication date: 20191203 |