CN103331085A - Alkaline powder for treating leaked hydrogen sulfide poisonous gas and production method thereof - Google Patents
Alkaline powder for treating leaked hydrogen sulfide poisonous gas and production method thereof Download PDFInfo
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- CN103331085A CN103331085A CN2013101968706A CN201310196870A CN103331085A CN 103331085 A CN103331085 A CN 103331085A CN 2013101968706 A CN2013101968706 A CN 2013101968706A CN 201310196870 A CN201310196870 A CN 201310196870A CN 103331085 A CN103331085 A CN 103331085A
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Abstract
The invention provides alkaline powder for treating leaked hydrogen sulfide poisonous gas and a production method thereof. A neutralization capturing agent, a desiccant and an additive are prepared into the alkaline powder according to a certain ratio by a specific method. The production method adopts the easily available raw materials and has simple processes and low energy consumption. The alkaline powder has particles of 60 to 160 meshes, and has a specific surface greater than 32m<2>/g, bulk density greater than 0.85g/cm<3>. After sprinkling, the alkaline powder has good settlement performances and has a settlement recovery rate greater than or equal to 95% in 2min. The alkaline powder can effectively treat hydrogen sulfide gas, has a fast treatment rate, produces dry and fluffy residues after treatment, can be cleaned easily, and has a wide application range and small damage on the environment.
Description
Technical field
The present invention relates to acidic chemical and leak the emergency disposal field, be specifically related to a kind of alkaline pulvis and production method thereof of leaking hydrogen sulfide poison gas of disposing.
Background technology
Hydrogen sulfide is a kind of colourless, hypertoxic, gas that rotten egg flavor is arranged, when taking place to poison, after hydrogen sulfide enters alveolar by respiratory tract, with the ferrous ion snap action generation ferrous sulfide precipitation in the hemoglobin, stop the set of hemoglobin and oxygen, finally caused people's death because of anoxic.The hydrogen sulfide poisoning event has sudden and group, death rate height, in case take place, with serious threat worker and the masses' personal safety, and the secondary disaster influence is big, and major polluting atmosphere environment, even destroy ecological environment.When Air Hydrogen Sulfide content reaches 0.05%, namely can smell fetid odour.The content of industrial permission Air Hydrogen Sulfide is no more than 10mg/m
3
Hydrogen sulfide mainly results from industries such as exploitation, rubber, sulfur dye, papermaking, the dish of mining, sulfur-bearing oil is pickled, beet sugar manufacture, animal glue.Also be present in places such as marshland, irrigation canals and ditches, well, sewer, culvert, tunnel and rubbish heap, ight soil pond, cesspool.Owing in hydrogen sulfide water soluble and the organic matter, can flow to away from place, generation source with water or oil sometimes, thereby cause the accidental poisoning accident.Hydrogen sulfide is heavier than air, be easy to flow to or be trapped in the bottom of low-lying land, basement and building, easily be deposited in sewer and the cesspool, simultaneously when dredging sewer and cleaning sullage pond, the stirring of sewage also can make the hydrogen sulfide that is dissolved in the water discharge in large quantities, thereby has increased the airborne concentration of hydrogen sulfide in these places.
In China's petrochemical industry natural gas extraction and petroleum refining process, the dangerous high of hydrogen sulfide leakage up to 14%, takes place as hydrogen sulfide content in the natural gas of northeast, river in the hydrogen sulfide of association high concentration mostly.The poisoning that causes because of hydrogen sulfide gas leakage happens occasionally, and once occurs in 2003 in the especially big gas blowout accident in Chongqing, leaks method of disposal and emergency management and rescue measure owing to lack effective hydrogen sulfide, cause nearly 250 people's death, people more than 4000 poisons, and nearly 100,000 people evacuate, and lose inestimable.
Carry the removal of hydrogen sulfide in the gas in a organized way for pipeline etc., method can be divided three classes, one class is liquid absorption cleaning method, as: CN102527214A discloses the method that a kind of complexing iron absorption liquid is handled hydrogen sulfide, CN102210968A discloses a kind of TMG hydrochloric acid composite fluid desulfurizing agent, CN101890286A discloses a kind of method and device that utilizes the brown iron oxide suspension to remove hydrogen sulfide in the gas, CN102451612A discloses the method that a kind of nonaqueous solvents removes hydrogen sulfide in the gas, the alkalescence that CN101703883B discloses hydrogen sulfide in a kind of biogas absorbs oxidizing process, CN101766946A discloses a kind of FeOOH-air circulation regeneration and has removed the hydrogen sulfide method, and CN101099919A discloses a kind of preparation method of ambient temperature desulfuration agent 1-nitroanthraquinone sodium disulfonate; Another kind of is the solid absorption method of purification, the modified activated carbon removal methods of hydrogen sulfide in a kind of tail gas is disclosed as CN102500323A, CN1792415A discloses a kind of preparation method who utilizes aluminium oxide accessory substance red mud to prepare hydrogen sulfide remover, and CN1171661C discloses a kind of method of high-temperature catalytic depriving hydrogen sulphide; Also having a class is the biological desulphurization method, namely utilizes natural thiophilic by dripping filter bed with hydrogen sulfide stripping.
The leakage of hydrogen sulfide is disposed, and the safeguard procedures that should adopt for opening are for withdrawing personnel rapidly to weather 150m～300m place, and isolates strict restriction personnel discrepancy, cut-out burning things which may cause a fire disaster immediately.Treatment people is worn self-supporting positive-pressure type respirator, wears frog suit, enters the scene from weather, cuts off source of leaks as far as possible, and spreads, dilutes or dissolve by blowing or spray form water.
Hydrogen sulfide for fixed space leaks, and the main method of ventilation, fire water spray that adopts is disposed.Ventilating mainly is by dilution concentration of hydrogen sulfide to be reduced, and is fit to the emergency action of small leakage; The fire water spray is owing to the solubility of hydrogen sulfide in water and not very big (water of 1 volume absorbs the hydrogen sulfide of 2.5 volumes under the normal temperature), so efficient is limited, and can produce a large amount of hydrogen sulfide waste water.
And leak the emergency disposal of hydrogen sulfide for inorganization, CN101648108A discloses a kind of leakage remover of hydrogen sulfide gas, this leaks remover is made up of carrier, active material and lyophobic dust, wherein the carrier main component is mica powder, magnesia, active carbon or diatomite, active material is mainly sodium metasilicate, NaOH, zinc oxide, zinc carbonate, zinc hydroxide, basic zinc carbonate and zinc acetate, and lyophobic dust is mainly dimethicone, Methyl Hydrogen Polysiloxane Fluid and hydrophobicity white carbon; CN102423609A discloses a kind of hydrogen sulfide and has leaked arresting agent and preparation method thereof, this arresting agent is made up of powder material, Water-solubility Material and liquid material, wherein powder material is magnesia, basic zinc carbonate, zinc carbonate and/or zinc oxide, Water-solubility Material has potassium hydroxide, NaOH, sodium metasilicate and/or sodium carbonate, liquid material is made up of silicone oil and/or water-miscible organic solvent, its preparation method is for to add material successively in the water that accounts for 0.5 times～10 times of total materials, stirring and drying is pulverized, and obtains required pulvis.Although these two patents can effectively be disposed leakage hydrogen sulfide, the existence of heavy metal zinc has increased the environmental pollution risk, moreover the adding of silicone oil also reduces the specific surface of pulvis, thereby has reduced adsorption reaction efficient.
Summary of the invention
The purpose of this invention is to provide a kind of being exclusively used in and dispose the trapping and eliminating powder agent of leaking hydrogen sulfide poison gas; Another object of the present invention provides a kind of being exclusively used in and disposes the production method of leaking the agent of hydrogen sulfide gas trapping and eliminating powder.
These and other purpose of the present invention will and be described and further set forth by following detailed description.
The problem to be solved in the present invention one is to leak catching fast of hydrogen sulfide poison gas to disappear, the 2nd, and the cleaning of accident residue.
The present invention is exclusively used in hydrogen sulfide and leak disposes, and produces that pulvis is raw materials used to be easy to get, and part material is refuse reclamation, and special-purpose production technology is arranged; The prevented from caking of pulvis own, free settling except the alkaline corrosion effect is arranged, do not have other toxic and side effects; It is fluffy to dispose the back residue dried, is easy to clean or removed by dust catcher, little to ambient influnence.
Alkaline pulvis of the present invention, by in and arresting agent, anti-blushing agent and additive totally 3 kinds of components constitute, the mass percent of each component is followed successively by: in and arresting agent 75%～99%, anti-blushing agent 0.5%～10%, additive 0.5%～15%.
Alkaline pulvis of the present invention, its preferred ingredients quality proportioning is: in and arresting agent 85%～99%, anti-blushing agent 0.5%～5%, additive 0.5%～10%.
In of the present invention and arresting agent be to be constituted by one or more compositions in calcium hydroxide, potassium hydroxide and NaOH, aluminium hydroxide, iron hydroxide and the magnesium hydroxide, wherein the quality proportioning of calcium hydroxide is 15%～50%, the quality proportioning of potassium hydroxide is 25%～80%, and the proportioning of all the other compositions is followed successively by NaOH 1%～25%, aluminium hydroxide 0%～1%, iron hydroxide 0%～1.5% and magnesium hydroxide 0%～2%.
In of the present invention and the effect of arresting agent be to utilize the acid-base neutralization principle, with the hydrogen sulfide gas that leaks by with the neutrality that is reacted into of alkaline matter, alleviate because of hydrogen sulfide and leak safety and Health and the problem of environmental pollution that causes.
In of the present invention and arresting agent can also be that the potassium hydroxide of carbide slag is or/and the NaOH modifier; In and arresting agent can also be one or both mixture of carbide slag and potassium hydroxide, NaOH, wherein carbide slag content is 20%～50%, all the other mass ratioes are potassium hydroxide 25%～80%, NaOH 0%～25%.When adopting the carbide slag modification thing, be conducive to the recycling of refuse, thereby economize on resources.
Anti-blushing agent of the present invention is super high molecular weight water-absorbing resin, molecular sieve, activated alumina and silica gel etc., preferably molecular sieve, activated alumina and silica gel etc., more preferably molecular sieve, silica gel etc.; When selecting for use preferred silica gel to make anti-blushing agent, its wettability power reaches more than 40%, and certain indication performance is arranged.
The effect of anti-blushing agent of the present invention is to utilize its moisture pick-up properties, ensures that pulvis is nonhygroscopic in closed environment.
Additive of the present invention is developed by Zhengzhou University, and its effect one is to promote the dissolving of raw material in water in the preparation process, and the 2nd, be conducive to pulvis itself in the storage process and disperse, prevent caking that three are to use the volatilization that helps to stop hydrogen sulfide gas in the process.
The control of the particle diameter of pulvis of the present invention is between 40 orders～200 orders, and too when big (less than 40 orders), sedimentation is fast, is unfavorable for that catching of hydrogen sulfide poison gas gas disappears, and can prolong neutralization reaction simultaneously and finish the required time for particle diameter; During particle diameter too little (greater than 200 orders), though be conducive to the gas absorption reaction, effect of settling is poor, easily causes air pollution.
Pulvis of the present invention, preferred particle size range is 60 orders～160 orders.
Pulvis of the present invention, the specific surface of preferred pulvis is greater than 32m
2/ g, bulk density is greater than 0.85g/cm
3
The 2 minute sedimentation rate of recovery of pulvis of the present invention in airtight no wind environment are not less than 95%.
The production method that leakage hydrogen sulfide of the present invention is disposed alkaline pulvis is: earlier in having the retort of agitating device successively with additive and in and arresting agent, stir 0.5h～2h, the clear water of adding 5%～50%, stir 0.5h～1h again, by grinding and screening, the part that will meet granularity requirements is sent into the hot-air drier drying, to moisture content less than after 0.1%～1%, send into vortex mixer, add anti-blushing agent and carry out mixing, be met the qualified products of granularity, specific area, bulk density requirement; Nonconforming coarsegrain part is then sent into milled processed, then send into the retort circular treatment for undesirable small particle diameter part.
The packaging bag that the alkaline pulvis of hydrogen sulfide is leaked in disposal of the present invention need have moisture-proof function, and packing needs sealing, needn't take to protect the gas protection separately, but must not adopt vacuum packaging.
Leakage hydrogen sulfide of the present invention is disposed alkaline pulvis, after packaging, should be positioned over dry ventilated environment and store.
Leakage hydrogen sulfide of the present invention is disposed alkaline pulvis and is being satisfied packing and depositing under the requirement condition, and performance can obviously not change in 3 years.
The alkaline pulvis that leakage hydrogen sulfide of the present invention is disposed is fit to portable, cart type, fixed or vehicle-mounted emergency disposal plant, and spraying used power gas source can be air, inert gas such as nitrogen, helium etc., and preferred nitrogen cannot be selected C0 for use
2Deng sour gas.
Leakage hydrogen sulfide of the present invention is disposed alkaline pulvis, and under the closed environment condition of laboratory, to leaking hydrogen sulfide gas, 3 minutes capture rates are not less than 95%, 10 minute capture rate and are not less than 99%, and residue dried is fluffy, easy cleaning.
Leakage hydrogen sulfide of the present invention is disposed alkaline pulvis, and under laboratory environment condition, simulation is disposed when leaking hydrochloric acid, and reaction is incomplete, and pulvis has hydro-planing at liquid surface, and residue is the mush shape, directly cleaning difficulty.
Leakage hydrogen sulfide of the present invention is disposed alkaline pulvis, and under laboratory environment condition, simulation is disposed when leaking sulfuric acid, and temperature rise surpasses 110 ℃, has white cigarette to emerge, and the residue caking is serious, directly cleaning difficulty.
Leakage hydrogen sulfide of the present invention is disposed alkaline pulvis, and the disposal that is exclusively used in hydrogen sulfide poison gas is leaked, and made pulvis satisfies the relevant national standard requirement, is fit to fill in all kinds portable, fixed or vehicle-mounted emergency disposal plant or the fire-fighting powder dispenser.
Prepare alkaline pulvis needed raw material of the present invention and be easy to get, the preparation method is easy, and raw material easily disperses in water, the production process energy consumption is low, the pulvis of producing does not lump, sprays that afterreaction is quick, settling property is good, and residue is fluffy, is easy to cleaning or is removed by the negative pressure suction.
Description of drawings
Fig. 1 disposes the alkaline pulvis technological process of production figure that leaks hydrogen sulfide poison gas for the present invention.
The specific embodiment
Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.The used chemicals of present embodiment, except additive was provided by Zhengzhou University, all the other were all commercial, and its purity can be technical pure or chemical pure.The used production equipment of present embodiment is all the commercial equipment that meets the production safety requirement.
Embodiment 1 hydrogen sulfide leaks the preparation and application of disposing pulvis
For the preparation of disposing the alkaline pulvis 100kg that hydrogen sulfide leaks, it is formed proportioning and is: in and arresting agent (calcium hydroxide 46.75kg, NaOH 23.375kg, potassium hydroxide 23.375kg) 93.5kg, anti-blushing agent 0.5kg, additive 6kg.Concrete preparation method be earlier in having the retort of agitating device successively with additive and in and arresting agent, stir 0.5h～1h, the clear water of adding 5%～50%, stir 1h again, by grinding and primary dcreening operation, the part (60 orders～160 orders) that will meet granularity requirements is sent into the hot-air drier drying, to moisture content less than after 1%, send into vortex mixer, add anti-blushing agent and carry out mixing, be met the qualified products of granularity, specific area, bulk density requirement; Particle diameter is ground again and sieves greater than the carrying out of 60 orders (the order number is less than 60 orders), to the send into retort of particle diameter less than 160 orders (the order number is greater than 160 orders), carry out cycling and reutilization.
When leaking the leakage of disposal pulvis simulation disposal hydrogen sulfide with the hydrogen sulfide that obtains, concentration of hydrogen sulfide is initially 5.3 * 10
4Ppm reduced to 2.0 * 10 after 3 minutes
3Ppm dropped to 50ppm in 10 minutes, and the residue that stays after the disposal is puffy, can be siphoned away by dust catcher.
Embodiment 2 hydrogen sulfide leak the preparation and application of disposing pulvis
For the preparation of disposing the alkaline pulvis 100kg that hydrogen sulfide leaks, it is formed proportioning and is: in and arresting agent 90kg (carbide slag 18kg, potassium hydroxide 72kg), anti-blushing agent 2kg, additive 8kg.Concrete preparation method be earlier in having the retort of agitating device successively with additive and in and arresting agent, stir 0.5h～1h, the clear water of adding 5%～50%, stir 1h again, by grinding and primary dcreening operation, the part (60 orders～160 orders) that will meet granularity requirements is sent into the hot-air drier drying, to moisture content less than after 1%, send into vortex mixer, add anti-blushing agent and carry out mixing, be met the qualified products of granularity, specific area, bulk density requirement; Particle diameter is ground again and sieves greater than the carrying out of 60 orders (the order number is less than 60 orders), to the send into retort of particle diameter less than 160 orders (the order number is greater than 160 orders), carry out cycling and reutilization.
When leaking the leakage of disposal pulvis simulation disposal hydrogen sulfide with the hydrogen sulfide that obtains, concentration of hydrogen sulfide is initially 5.3 * 10
4Ppm reduced to 100ppm after 3 minutes, dropped to 5ppm in 10 minutes, and the residue that stays after the disposal is puffy, can be siphoned away by dust catcher.
Instantiation of the present invention; hydrogen sulfide of the present invention being leaked disposal pulvis and preparation method thereof illustrates and describes with result of use; but on basis of the present invention; the technical staff should be understood that; the modification that it is made and improvement; as not departing from the spirit that claims of the present invention limit, all belong to the scope of protection of present invention.
Claims (8)
1. one kind is used for disposing the alkaline pulvis that leaks hydrogen sulfide poison gas, it is characterized in that, the alkalescence pulvis by in and arresting agent, anti-blushing agent and 3 kinds of components of additive constitute, the mass content of each component is followed successively by: in and arresting agent 75%～99%, anti-blushing agent 0.5%～10%, additive 0.5%～15%.
2. according to claim 1 for the alkaline pulvis that dispose to leak hydrogen sulfide poison gas, it is characterized in that preferably each constituent mass content is: in and arresting agent 85%～99%, anti-blushing agent 0.5%～5%, additive 0.5%～10%.
3. described for disposing the alkaline pulvis that leaks hydrogen sulfide poison gas according to claim 1-2, it is characterized in that, constituted by one or more compositions in calcium hydroxide, potassium hydroxide and NaOH, aluminium hydroxide, iron hydroxide and the magnesium hydroxide with arresting agent in described, wherein the quality proportioning of calcium hydroxide is 15%～50%, the quality proportioning of potassium hydroxide is 25%～80%, and the proportioning of all the other compositions is followed successively by NaOH 1%～25%, aluminium hydroxide 0%～1%, iron hydroxide 0%～1.5% and magnesium hydroxide 0%～2%.
4. described for disposing the alkaline pulvis that leaks hydrogen sulfide poison gas according to claim 1-2, it is characterized in that, in described and arresting agent can also be one or both mixture of carbide slag and potassium hydroxide, NaOH, wherein carbide slag content is 20%～50%, and all the other mass ratioes are potassium hydroxide 25%～80%, NaOH 0%～25%.
5. described for disposing the alkaline pulvis that leaks hydrogen sulfide poison gas according to claim 1-2, it is characterized in that, described anti-blushing agent is super high molecular weight water-absorbing resin, molecular sieve, activated alumina and silica gel etc., preferably molecular sieve, activated alumina and silica gel etc., more preferably molecular sieve, silica gel etc.; When selecting for use preferred silica gel to make anti-blushing agent, its wettability power reaches more than 40%.
6. one kind is used for the production method that the alkaline pulvis of hydrogen sulfide poison gas is leaked in the described disposal of claim 1-5, it is characterized in that, earlier in having the retort of agitating device successively with additive and in and arresting agent, stir 0.5h～2h, add 5%～50% clear water again, continue to stir 0.5h～1h, by grinding and screening, the part that will meet granularity requirements is sent into the hot-air drier drying, to moisture content less than after 0.1%～1%, send into vortex mixer, add anti-blushing agent and carry out mixing, be met the qualified products of granularity, specific area, bulk density requirement; Nonconforming coarsegrain part is then sent into milled processed, then send into the retort circular treatment for undesirable small particle diameter part.
7. it is characterized in that for disposing the alkaline pulvis that leaks hydrogen sulfide poison gas according to claim 1～6 is described that the particle diameter control of described pulvis is between 40 orders～200 orders, preferred particle size range is 60 orders～160 orders.
8. described for disposing the alkaline pulvis that leaks hydrogen sulfide poison gas according to claim 1-7, it is characterized in that described pulvis specific surface is greater than 32m
2/ g, bulk density is greater than 0.85g/cm
3, the sedimentation rate of recovery was not less than 95% in 2 minutes.
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| CN2013101968706A CN103331085A (en) | 2013-05-24 | 2013-05-24 | Alkaline powder for treating leaked hydrogen sulfide poisonous gas and production method thereof |
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|---|---|---|---|
| CN2013101968706A CN103331085A (en) | 2013-05-24 | 2013-05-24 | Alkaline powder for treating leaked hydrogen sulfide poisonous gas and production method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599693A (en) * | 2013-10-17 | 2014-02-26 | 中国石油化工股份有限公司 | Hydrogen sulfide arresting method |
| CN103949140A (en) * | 2014-04-11 | 2014-07-30 | 中国石油化工股份有限公司 | Hydrogen sulfide leakage emergency removing dry powder, and preparation method thereof |
| CN107020002A (en) * | 2017-04-14 | 2017-08-08 | 中国石油化工股份有限公司 | Catch arresting agent of disappear hydrogen sulfide and chlorine and preparation method thereof |
| CN109569180A (en) * | 2018-11-08 | 2019-04-05 | 徐琰翔 | Arresting agent and preparation method thereof |
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| JPS5363290A (en) * | 1976-11-19 | 1978-06-06 | Matsushita Electric Ind Co Ltd | Absorbent for sulfur compounds and production thereof |
| JPH02145679A (en) * | 1988-11-28 | 1990-06-05 | Miyata Ind Co Ltd | Neutralizing agent |
| CN1426837A (en) * | 2001-12-15 | 2003-07-02 | 北京三聚环保新材料有限公司 | Desulfurization catalyst, its preparation method and use |
| CN101648108A (en) * | 2009-09-21 | 2010-02-17 | 中国石油化工股份有限公司 | Hydrogen sulfide gas leakage scavenger |
| CN101693141A (en) * | 2009-09-28 | 2010-04-14 | 北京市劳动保护科学研究所 | Acid liquor leakage treating agent and application thereof |
| CN102989115A (en) * | 2012-11-05 | 2013-03-27 | 总装备部工程设计研究总院 | Alkaline powder for treating leaked nitric acid and volatile toxic gases of nitric acid and production method of alkaline powder |
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2013
- 2013-05-24 CN CN2013101968706A patent/CN103331085A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5363290A (en) * | 1976-11-19 | 1978-06-06 | Matsushita Electric Ind Co Ltd | Absorbent for sulfur compounds and production thereof |
| JPH02145679A (en) * | 1988-11-28 | 1990-06-05 | Miyata Ind Co Ltd | Neutralizing agent |
| CN1426837A (en) * | 2001-12-15 | 2003-07-02 | 北京三聚环保新材料有限公司 | Desulfurization catalyst, its preparation method and use |
| CN101648108A (en) * | 2009-09-21 | 2010-02-17 | 中国石油化工股份有限公司 | Hydrogen sulfide gas leakage scavenger |
| CN101693141A (en) * | 2009-09-28 | 2010-04-14 | 北京市劳动保护科学研究所 | Acid liquor leakage treating agent and application thereof |
| CN102989115A (en) * | 2012-11-05 | 2013-03-27 | 总装备部工程设计研究总院 | Alkaline powder for treating leaked nitric acid and volatile toxic gases of nitric acid and production method of alkaline powder |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599693A (en) * | 2013-10-17 | 2014-02-26 | 中国石油化工股份有限公司 | Hydrogen sulfide arresting method |
| CN103599693B (en) * | 2013-10-17 | 2016-02-24 | 中国石油化工股份有限公司 | Catch the method for the hydrogen sulfide that disappears |
| CN103949140A (en) * | 2014-04-11 | 2014-07-30 | 中国石油化工股份有限公司 | Hydrogen sulfide leakage emergency removing dry powder, and preparation method thereof |
| CN107020002A (en) * | 2017-04-14 | 2017-08-08 | 中国石油化工股份有限公司 | Catch arresting agent of disappear hydrogen sulfide and chlorine and preparation method thereof |
| CN109569180A (en) * | 2018-11-08 | 2019-04-05 | 徐琰翔 | Arresting agent and preparation method thereof |
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Application publication date: 20131002 |