CN105135446A - Comprehensive processing method for closed calcium carbide furnace gas and chromium slag - Google Patents
Comprehensive processing method for closed calcium carbide furnace gas and chromium slag Download PDFInfo
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- CN105135446A CN105135446A CN201510521278.8A CN201510521278A CN105135446A CN 105135446 A CN105135446 A CN 105135446A CN 201510521278 A CN201510521278 A CN 201510521278A CN 105135446 A CN105135446 A CN 105135446A
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- chromium
- gas
- calcium carbide
- carbide furnace
- chromium slag
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000011651 chromium Substances 0.000 title claims abstract description 59
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 49
- 239000002893 slag Substances 0.000 title claims abstract description 48
- 239000005997 Calcium carbide Substances 0.000 title claims abstract description 32
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000003672 processing method Methods 0.000 title abstract 3
- 239000007789 gas Substances 0.000 claims abstract description 69
- 238000000034 method Methods 0.000 claims abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 10
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 238000007084 catalytic combustion reaction Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 13
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 7
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 6
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 231100000419 toxicity Toxicity 0.000 abstract description 3
- 230000001988 toxicity Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 231100000614 poison Toxicity 0.000 abstract description 2
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 abstract 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 abstract 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 abstract 1
- 230000007096 poisonous effect Effects 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 abstract 1
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- 239000005864 Sulphur Substances 0.000 description 6
- 229910052785 arsenic Inorganic materials 0.000 description 6
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 6
- 238000001784 detoxification Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000006479 redox reaction Methods 0.000 description 3
- PXLIDIMHPNPGMH-UHFFFAOYSA-N sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- RBFQJDQYXXHULB-UHFFFAOYSA-N arsane Chemical compound [AsH3] RBFQJDQYXXHULB-UHFFFAOYSA-N 0.000 description 2
- 229910000070 arsenic hydride Inorganic materials 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a comprehensive processing method for closed calcium carbide furnace gas and chromium slag, and belongs to the technical field of comprehensive waste utilization and environment pollution improvements. According to the method, closed calcium carbide furnace gas and chromium slag make contact and are combusted, hexavalent chromium in the chromium slag is converted into trivalent chromium, and toxicity of the chromium slag is lowered. By means of the method, poisonous and harmful gas such as phosphorus hydride, hydrogen sulfide and cyanide in the calcium carbide furnace gas can be removed, the aim of emission is achieved in a combustion manner, and the hexavalent chromium in the chromium slag is reduced into the trivalent chromium while waste gas is purified. By means of the method, the dual effects of chromium slag detoxifying and calcium carbide furnace gas toxicity lowering can be achieved at the same time, the aim of treating waste through waste and the aim of comprehensive utilization are achieved, and the comprehensive processing method belongs to industry clean production and a novel pollution treatment process technology.
Description
Technical field
The present invention relates to the integrated conduct method of a kind of enclosed calcium carbide furnace gas and chromium slag, belong to comprehensive utilization of waste materials and technical field of environment pollution control.
Background technology
China has become the maximum country of calcium carbide output and consumption figure in the world.The calcium carbide furnace gas that annual discharge is hundreds of millions of, its main component is carbon monoxide, nitrogen and hydrogen, content is between 85-95%, also containing gaseous impurities such as a large amount of dust, carbon dioxide, hydrogen sulfide, arsenic hydride, hydrogen fluoride, hydrogen cyanide, therefore gas directly discharges and will cause severe contamination to environment, can produce C1 chemical industry product after purification, as the product such as formic acid, methyl alcohol, but because current purification techniques is also immature, cause its product cost to be difficult to accept.The direct post combustion emission of most of calcium carbide furnace gas, in combustion process, equipment corrosion is comparatively serious, and discharge other in also containing microtoxicity material, not only cause environmental pollution, also cause a large amount of wastes of resource.
Chromium salt production major part is as baking mixed in dolomite, soda ash and part chromium ground-slag material with calcareous filler, this technique ton product discharge chromium slag 2-3 ton.Very large containing a large amount of Cr VI toxicity in chromium slag, cause Environment Pollution Event to happen occasionally.Current China will discharge more than 10 ten thousand tons of chromium slags every year, and burden over the years about reaches 5,000,000 tons.The chromium slag that pile up like a mountain is with rain entered environment, and severe contamination surface water, underground water and soil, arrived the stage controlled.
Current chromium residue detoxifying process is mainly divided into two kinds of methods: i.e. dry detoxified and wet method detoxifcation.Dry detoxified: chromium slag and cinder mixing calcination, CO makes hexavalent chrome reduction be trivalent chromium, and for preventing trivalent chromium to be oxidized by oxygen brightness reversion once again, the chromium slag after removing toxic substances needs landfill, land occupation, and there is the risk of secondary pollution.The principle of chromic slag wet method detoxifcation first Cr VI in chromium slag is transferred to aqueous phase, and be then nontoxic trivalent chromium with reducing agent by hexavalent chrome reduction, reach chromium residue detoxifying effect, but need to consume a large amount of acid, cost is very high.
In view of the problems referred to above existed at present, it is desirable to find that a kind for the treatment of of wastes with processes of wastes against one another carrys out the new method of detoxification chromium slag, and existing reducibility gas in calcium carbide furnace gas, also there is toxic and harmful.Therefore with calcium carbide furnace gas detoxification chromium slag to reach the object of chromium residue detoxifying while reducing gas discharging.
Summary of the invention
The object of the present invention is to provide the integrated conduct method of a kind of enclosed calcium carbide furnace gas and chromium slag, by enclosed calcium carbide furnace gas and chromium slag catalytic combustion, in furnace gas burning and exhausting, chromium slag, Cr VI transfers trivalent chromium to, thus reaches the object of chromium residue detoxifying, the treatment of wastes with processes of wastes against one another.
The integrated conduct method of enclosed calcium carbide furnace gas of the present invention and chromium slag, specifically comprises the following steps:
(1) chromium residue is crushed to 100-600 order, for subsequent use;
(2) chromium residue that step (1) obtains is preheating to 300-800 DEG C, passes into the calcium carbide furnace gas after alkali cleaning at 230-800 DEG C after 5-50 minute, flame-out stopping is burnt and continues to pass into reducibility gas or protective gas; Stop ventilation completing chromium residue detoxifying after being cooled to less than 230 DEG C, the gas after burning can directly discharge.
Reducibility gas of the present invention is one or more the mixed mixtures in any proportion in hydrogen, methane, carbon monoxide; Protective gas is carbon dioxide or nitrogen.
Beneficial effect of the present invention:
(1) the method for the invention is while detoxification chromium slag, and the toxic gas such as reducibility gas CO, hydrogen sulfide, arsenic hydride, hydrogen cyanide in calcium carbide furnace gas by synergistic purification, thus achieves qualified discharge; Make the Cr VI in chromium slag be reduced to trivalent chromium, the trivalent chromium of reduction, through cooling in reducing atmosphere, is not easy brightness reversion; Compare current chromium residue detoxifying method, the application's method belongs to the processing mode of the treatment of wastes with processes of wastes against one another, and operational outfit is simple and cost is lower; The method can simultaneously purifying calcium carbide furnace gas and detoxification chromium slag, is a kind of novel environment friendly method of green energy conservation, non-secondary pollution, reaches the effect of the treatment of wastes with processes of wastes against one another, comprehensive utilization.
(2) multiple reducibility gas is contained in calcium carbide furnace gas, compare pure gas detoxifying effect better, hydrogen molecule is little, penetrability is good, and reaction is more thorough, simultaneously, sour gas in reducibility gas and chromium slag react, generate solid matter, serve the object of similar alkali cleaning, the calcium carbide furnace gas like this after process can also use as fuel; Play not only cleaning of off-gas but also the double effects of detoxification chromium slag.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but protection scope of the present invention is not limited to described content.
Embodiment 1
Raw material calcium carbide furnace gases from Qujing of Yunnan calcium carbide manufacturing enterprise, carbon monoxide 80 ~ 90%, hydrogen 2 ~ 8%, methane 2 ~ 3%, hydrogen sulfide 0.5 ~ 1%, hydrogen phosphide 1 ~ 3%, hydrogen cyanide 1 ~ 3%.
(1) 120 orders are crushed to containing dry weight than the chromium slag oven dry of 2% sodium chromate, for subsequent use;
(2) chromium residue that step (1) obtains is preheating to 350 DEG C, then presses 0.3m
3the flow velocity of/min passes into the calcium carbide furnace gas after alkali cleaning (be greater than 80% containing CO concentration, the minimum gas content of impurities such as sulphur, phosphorus, arsenic control 1%) at 300 DEG C after 50 minutes, and flame-out stopping is burnt and continue to pass into reducibility gas carbon dioxide; Stop ventilation completing chromium residue detoxifying after being cooled to 200 DEG C, the gas after burning can directly discharge.
Get cooled reducing slag to detect, its content of 6-valence Cr ions is less than 2ppm, and reducing slag air storage detects after 3 months again, and content of 6-valence Cr ions is still less than 2ppm, does not occur chromium slag brightness reversion phenomenon, and chromium slag is acid; After redox reaction, turn round in kilneye Exhaust Gas that the trace gas content such as sulphur, arsenic, cyanogen is all lower than 2ppm, carbon monoxide is contained in lower than 40%, and this gas can direct burning and exhausting, meets environmental protection requirement.
Embodiment 2
Raw material calcium carbide furnace gases from Sichuan's chemical enterprise, carbon monoxide 80 ~ 85%, hydrogen 2 ~ 4%, methane 1 ~ 3%, hydrogen sulfide 1 ~ 2%, hydrogen phosphide 1 ~ 2%, hydrogen cyanide 1 ~ 1.5%.
(1) 250 orders are crushed to containing dry weight than the chromium slag oven dry of 1% sodium chromate, for subsequent use;
(2) chromium residue that step (1) obtains is preheating to 750 DEG C, pass into the calcium carbide furnace gas tail gas after alkali cleaning and (be greater than 80% containing CO concentration, the minimum gas content of impurities such as sulphur, phosphorus, arsenic control 1%) after 10 minutes, stop working and stop burning and continuing to pass into reducibility gas nitrogen at 750 DEG C; Stop ventilation completing chromium residue detoxifying after being cooled to 150 DEG C, the gas after burning can directly discharge.
Get cooled reducing slag to detect, its content of 6-valence Cr ions is less than 2ppm, and reducing slag air storage detects after 3 months again, and content of 6-valence Cr ions is still less than 2ppm, does not occur chromium slag brightness reversion phenomenon, and chromium slag is acid; After redox reaction, turn round in kilneye Exhaust Gas that the trace gas content such as sulphur, arsenic, cyanogen is all lower than 2ppm, carbon monoxide is contained in lower than 50%, and this gas can direct burning and exhausting, meets environmental protection requirement.
Embodiment 3
Raw material calcium carbide furnace gases from Hefei ,Anhui chemical enterprise, carbon monoxide 85 ~ 90%, hydrogen 2 ~ 5%, methane 1 ~ 3%, hydrogen sulfide 0.5 ~ 1.5%, hydrogen phosphide 1 ~ 2%, hydrogen cyanide 1 ~ 2%.
(1) 800 orders are crushed to containing dry weight than the chromium slag oven dry of 3% sodium chromate, for subsequent use;
(2) chromium residue that step (1) obtains is preheating to 500 DEG C, pass into the calcium carbide furnace gas tail gas after alkali cleaning and (be greater than 85% containing CO concentration, the minimum gas content of impurities such as sulphur, phosphorus, arsenic control 0.5%) after 30 minutes, stop working and stop burning and continuing to pass into reducibility gas carbon monoxide at 500 DEG C; Stop ventilation completing chromium residue detoxifying after being cooled to 100 DEG C, the gas after burning can directly discharge.
Get cooled reducing slag to detect, its content of 6-valence Cr ions is less than 2ppm, and reducing slag air storage detects after 3 months again, and content of 6-valence Cr ions is still less than 2ppm, does not occur chromium slag brightness reversion phenomenon, and chromium slag is acid; After redox reaction, turn round in kilneye Exhaust Gas that the trace gas content such as sulphur, arsenic, cyanogen is all lower than 2ppm, carbon monoxide is contained in lower than 40%, and this gas can direct burning and exhausting, meets environmental protection requirement.
Claims (3)
1. an integrated conduct method for enclosed calcium carbide furnace gas and chromium slag, is characterized in that: by enclosed calcium carbide furnace gas and chromium slag catalytic combustion.
2. the integrated conduct method of enclosed calcium carbide furnace gas and chromium slag according to claim 1, is characterized in that, specifically comprise the following steps:
(1) chromium residue is crushed to 100-600 order, for subsequent use;
(2) chromium residue that step (1) obtains is preheating to 300-800 DEG C, passes into the calcium carbide furnace gas after alkali cleaning at 230-800 DEG C after 5-50 minute, flame-out stopping is burnt and continues to pass into reducibility gas or protective gas; Stop ventilation completing chromium residue detoxifying after being cooled to less than 230 DEG C, the gas after burning can directly discharge.
3. the integrated conduct method of enclosed calcium carbide furnace gas and chromium slag according to claim 1, is characterized in that: described reducibility gas is one or more the mixed mixtures in any proportion in hydrogen, methane, carbon monoxide; Protective gas is carbon dioxide or nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510521278.8A CN105135446A (en) | 2015-08-24 | 2015-08-24 | Comprehensive processing method for closed calcium carbide furnace gas and chromium slag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510521278.8A CN105135446A (en) | 2015-08-24 | 2015-08-24 | Comprehensive processing method for closed calcium carbide furnace gas and chromium slag |
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| CN105135446A true CN105135446A (en) | 2015-12-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542813A (en) * | 2016-01-19 | 2016-05-04 | 青岛理工大学 | Biomass recycling and chromium slag harmless synchronization technique |
| CN106110864A (en) * | 2016-06-28 | 2016-11-16 | 昆明理工大学 | A kind of method utilizing chromium dreg slurry to process flue gas |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884153A (en) * | 2006-06-29 | 2006-12-27 | 上海交通大学 | Method for processing organic chloride and heavy metal polluted bed mud |
| CN1962518A (en) * | 2006-11-24 | 2007-05-16 | 湖北宜化化工股份有限公司 | Calcium carbide furnace gas direct combustion method for producing calcium oxide |
| CN101625200A (en) * | 2009-07-31 | 2010-01-13 | 巴涌 | Energy-saving intermittent pulse-feeding technology of closed submerged arc furnace |
| CN102039085A (en) * | 2009-10-10 | 2011-05-04 | 天津七原生态科技有限公司 | Method for clean burning of coal burning boiler of circulating fluidized bed |
| CN103611410A (en) * | 2013-12-17 | 2014-03-05 | 四川省银河化学股份有限公司 | Method for treating yellow phosphorus tail gas |
-
2015
- 2015-08-24 CN CN201510521278.8A patent/CN105135446A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884153A (en) * | 2006-06-29 | 2006-12-27 | 上海交通大学 | Method for processing organic chloride and heavy metal polluted bed mud |
| CN1962518A (en) * | 2006-11-24 | 2007-05-16 | 湖北宜化化工股份有限公司 | Calcium carbide furnace gas direct combustion method for producing calcium oxide |
| CN101625200A (en) * | 2009-07-31 | 2010-01-13 | 巴涌 | Energy-saving intermittent pulse-feeding technology of closed submerged arc furnace |
| CN102039085A (en) * | 2009-10-10 | 2011-05-04 | 天津七原生态科技有限公司 | Method for clean burning of coal burning boiler of circulating fluidized bed |
| CN103611410A (en) * | 2013-12-17 | 2014-03-05 | 四川省银河化学股份有限公司 | Method for treating yellow phosphorus tail gas |
Non-Patent Citations (1)
| Title |
|---|
| 于乐虎等: "密闭电石炉炉气利用及治理系统浅析", 《环境科学与管理》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542813A (en) * | 2016-01-19 | 2016-05-04 | 青岛理工大学 | Biomass recycling and chromium slag harmless synchronization technique |
| CN105542813B (en) * | 2016-01-19 | 2019-08-20 | 青岛理工大学 | A kind of biomass as resources and chromic slag harmlessness synchronous method |
| CN106110864A (en) * | 2016-06-28 | 2016-11-16 | 昆明理工大学 | A kind of method utilizing chromium dreg slurry to process flue gas |
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Application publication date: 20151209 |