CN104248944A - Purifying agent for adsorbing volatile oxides in MTP tail gas and preparation method thereof - Google Patents
Purifying agent for adsorbing volatile oxides in MTP tail gas and preparation method thereof Download PDFInfo
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- CN104248944A CN104248944A CN201310263401.1A CN201310263401A CN104248944A CN 104248944 A CN104248944 A CN 104248944A CN 201310263401 A CN201310263401 A CN 201310263401A CN 104248944 A CN104248944 A CN 104248944A
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Abstract
The invention relates to a purifying agent for adsorbing volatile oxides in an MTP tail gas and a preparation method thereof, wherein the purifying agent comprises a carrier and active components and is characterized in that the carrier is activated carbon, the active components comprise one of a soluble sodium salt or a soluble potassium salt, one of a soluble calcium salt or a soluble magnesium salt, and a soluble zinc salt. The purifying agent comprises the components by the mass percentage: 92.5%-98.5% of the activated carbon, 0.5%-5.0% of the soluble sodium salt, 0.5%-2.5% of the soluble potassium salt, 0.5%-2.5% of the soluble calcium salt, 0.5%-5.0% of the soluble magnesium salt, and 0.5%-2.5% of the soluble zinc salt. The purification agent and the preparation method thereof have the advantages of simple composition, easy acquisition, low cost, simple preparation process of the purifying agent, easily obtained raw materials, low production cost and no environmental pollution.
Description
Technical field
The present invention relates to the cleanser of removing volatile oxidn, belonging to field of air pollution purification, is for adsorbing MTP(preparing propylene from methanol specifically) cleanser and preparation method thereof of volatile oxidn in tail gas.
Background technology
Global Oil resource is day by day deficient, can constantly rise by crude oil extraction cost.Be that the propylene monomer of raw material affects cost by it and remains high with crude oil, new MTP technique take coal as the technique that propylene monomer produced by raw material, reaches good balance in cost benefit.And China is big coal country, coal resources relative abundance is more conducive to the production of new MTP technique propylene monomer.In the polymerization-grade propylene monomer of conventional petroleum route explained hereafter, dopant species is relative with quantity fixing, the polymerization-grade propylene monomer that MTP Coal Chemical Industry process route is produced, because its raw material is methyl alcohol or dimethyl ether, in the propylene monomer that it is produced, introduce a large amount of volatile oxidn impurity.Along with China becomes the large polypropylene producing country of the first in the world and country of consumption, in propylene polymerization processes, deep-processing process and laboratory analysis process, by volatile oxidn in the propylene tail gas of MTP explained hereafter, safely threat is produced to surrounding people, also environment is produced simultaneously and pollute.
Material benzenemethanol and the toxicity of dimethyl ether to human body of new MTP technique are relatively low, but by its transform generate other volatile oxidn particularly aldehydes have severe toxicity to human body.For formaldehyde, be the gas of colourless irritant smell under usual state, 0.06 × 10
-6mg/m
3during concentration, children just can cause asthma.0.1 × 10
-6mg/m
3during concentration, just can produce peculiar smell and sense of discomfort.0.6 × 10
-6mg/m
3during concentration, just eyes and throat be can stimulate, when concentration is higher, vomiting and even pulmonary edema of panting produced.Reach 30 × 10
-6mg/m
3during concentration, people is dead immediately.Therefore national environmental standard, the formaldehyde gas maximum permissible concentration in environment is 0.05 × 10
-6mg/m
3.
At present, the devolatility oxide process that domestic and international MTP tail gas adopts mainly contains damp process and dry process, damp process is exchanged by gas-liquid to be transferred in liquid phase by the oxide in gas, there is higher oxide removal capacity, dry process by gas-solid exchange by the oxide adsorbent in gas in cleanser, have higher oxide removal precision.In damp process deolefination, the patent of oxygen compound is as the US Patent No. 4814517 of UOP (UOP), adopts the methyl alcohol in normal butane liquid phase separation C4 alkene and dimethyl ether.In dry process deolefination, patent such as the Chinese patent CN101884905A of oxygen compound discloses a kind of method of alkali metals modified 4A, 5A, ZSM-5 molecular sieve adsorption cleaning hydrocarbon material flow.The cleanser of oxide removal is applied in depollution of environment field owing to requiring that oxide removal precision is very high, domestic also do not have patent report.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide cleanser for adsorbing volatile oxidn in MTP tail gas and preparation method thereof, at normal temperatures, by volatile oxidn harmful in MTP tail gas in chemisorbed removing industrial production or experimentation, its composition is simple for this cleanser, easy acquisition, with low cost, cleanser preparation process is simple, and raw material is easy to get, production cost is low, non-environmental-pollution.
For reaching above object, the technical scheme that the present invention takes is:
For adsorbing the cleanser of volatile oxidn in MTP tail gas, comprising carrier and active component, it is characterized in that:
Described carrier is active carbon,
Described active component comprises: soluble sodium salt or soluble potassium salt a kind of, soluble calcium salt wherein or solubility magnesium salts one wherein, and soluble zinc salt;
Each component proportion is by mass percentage:
Active carbon is 92.5% ~ 98.5%;
Soluble sodium salt is 0.5% ~ 5.0%;
Soluble potassium salt is 0.5% ~ 2.5%;
Soluble calcium salt is 0.5% ~ 2.5%;
Solubility magnesium salts is 0.5% ~ 5.0%;
Soluble zinc salt is 0.5% ~ 2.5%.
On the basis of technique scheme, described soluble sodium salt is sodium chloride or sodium sulphate, and described soluble potassium salt is potassium chloride or potassium sulfate, and described soluble calcium salt is calcium chloride, described solubility magnesium salts is magnesium chloride or magnesium sulfate, and described soluble zinc salt is zinc chloride or zinc sulfate.
On the basis of technique scheme, the proportioning of each component by percentage to the quality, carrier active carbon is 94 ~ 96%, soluble sodium salt is 2.0% ~ 4.0%, soluble potassium salt is 1.0% ~ 2.0%, soluble calcium salt is 1.0% ~ 2.0%, solubility magnesium salts is 2.0% ~ 4.0%, and soluble zinc salt is 1.0% ~ 2.0%.
On the basis of technique scheme, the index of described active carbon is: bulk density 0.45g/ml, hardness 97, particle size 0.6 ~ 1.7mm, ash content 2%.
For adsorbing the preparation method of the cleanser of volatile oxidn in MTP tail gas, it is characterized in that: described cleanser comprises carrier and active component,
Described carrier is active carbon,
Described active component comprises: soluble sodium salt or soluble potassium salt a kind of, soluble calcium salt wherein or solubility magnesium salts one wherein, and soluble zinc salt;
Each component proportion is by mass percentage:
Active carbon is 92.5% ~ 98.5%;
Soluble sodium salt is 0.5% ~ 5.0%;
Soluble potassium salt is 0.5% ~ 2.5%;
Soluble calcium salt is 0.5% ~ 2.5%;
Solubility magnesium salts is 0.5% ~ 5.0%;
Soluble zinc salt is 0.5% ~ 2.5%
Concrete preparation technology comprises the following steps:
(1) get soluble sodium salt or soluble potassium salt a kind of, soluble calcium salt wherein or solubility magnesium salts one wherein and soluble zinc salt by proportioning, three kinds of soluble metallic salts are mixed with respectively sodium salt or the sylvite aqueous solution, calcium salt or magnesium salt solution, zinc salt solution;
(2) active carbon is got by proportioning, after sodium salt or the sylvite aqueous solution, calcium salt or magnesium salt solution, zinc salt solution mixing, again using active carbon as carrier impregnation containing three kinds of soluble metallic salts the aqueous solution in, under 75 ~ 85 DEG C of conditions, mechanical agitation 4 ~ 6 hours, make soluble metallic salt be carried on active carbon, obtain the solution of supported active metals carrier;
(3) by the solution of described supported active metals carrier under 70 ~ 80 DEG C of conditions, dry 6 ~ 8 hours, obtain the activated carbon granule of supported active metals carrier;
(4) by the activated carbon granule of described supported active metals carrier, with concentration be 68% ~ 70% nitric acid and concentration be 50% hydrogen peroxide by 1:1 mixing after carry out oxidation processes, soaking at room temperature 4 hours;
(5) activated carbon granule of the supported active metals carrier after oxidation processes is filtered out, with distilled water washing, until the pH value of the activated carbon granule of supported active metals carrier is 5 ~ 7;
(6) under baking temperature 110 ~ 120 DEG C of conditions, make the activated carbon granule drying 8 ~ 10 hours of the supported active metals carrier after washing, obtain finished product cleanser.
On the basis of technique scheme, in step (1), by percentage to the quality, be 1.5% ~ 7.0% containing soluble sodium salt or sylvite in described sodium salt or the sylvite aqueous solution, surplus is water; Be 1.5% ~ 7.0% containing soluble calcium salt or magnesium salts in described calcium salt or magnesium salt solution, surplus is water; Containing soluble zinc salt in described zinc salt solution is 1.0% ~ 4.0%, and surplus is water.
On the basis of technique scheme, in finished product cleanser, by percentage to the quality, be 1.0% ~ 4.0% containing soluble sodium salt or sylvite in finished product cleanser, soluble calcium salt or magnesium salts are 1.0% ~ 4.0%, soluble zinc salt is 1.0% ~ 2.0%; Carrier active carbon is 94% ~ 96%.
On the basis of technique scheme, described soluble sodium salt is sodium chloride or sodium sulphate, and described soluble potassium salt is potassium chloride or potassium sulfate, and described soluble calcium salt is calcium chloride, described solubility magnesium salts is magnesium chloride or magnesium sulfate, and described soluble zinc salt is zinc chloride or zinc sulfate.
On the basis of technique scheme, the proportioning of each component by percentage to the quality, carrier active carbon is 94 ~ 96%, soluble sodium salt is 2.0% ~ 4.0%, soluble potassium salt is 1.0% ~ 2.0%, soluble calcium salt is 1.0% ~ 2.0%, solubility magnesium salts is 2.0% ~ 4.0%, and soluble zinc salt is 1.0% ~ 2.0%.
On the basis of technique scheme, the index of described active carbon is: bulk density 0.45g/ml, hardness 97, particle size 0.6 ~ 1.7mm, ash content 2%.
Cleanser for adsorbing volatile oxidn in MTP tail gas of the present invention and preparation method thereof, give a kind of normal temperature cleanser for adsorbing volatile oxidn in MTP tail gas, its composition is simple, easy acquisition, with low cost, cleanser preparation process is simple, and raw material is easy to get, production cost is low, non-environmental-pollution.Cleanser loads in purification pipe the purification that can be widely used in containing ppm level (the negative 6 power orders of magnitude of 10) oxide in factory and use for laboratory MTP tail gas, purification rear oxidation thing content is less than 0.5ppm (volume fraction), have to the adsorptive selectivity of oxide and adsorption capacity high, apply advantage easily, have important promotional value.
Accompanying drawing explanation
The present invention has following accompanying drawing:
Fig. 1 finished product cleanser loads purification pipe schematic diagram,
Fig. 2 contains 105.2ppm (volume fraction) gas of dimethyl ether, 15.6ppm (volume fraction) diethyl ether gas, 12.7ppm(volume fraction) positive propionic aldehyde gas, 78.4ppm (volume fraction) acetone gas, 9.9ppm (volume fraction) methanol gas, 16.8ppm (volume fraction) ethanol, 63.3ppm (volume fraction) normal propyl alcohol, MTP mixing propylene tail gas gas-chromatography monitoring system comparison diagram before and after cleanser absorbs of 90.2ppm (volume fraction) n-butanol gas.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Cleanser for adsorbing volatile oxidn in MTP tail gas of the present invention, comprises carrier and active component,
Described carrier is active carbon,
Described active component comprises: soluble sodium (Na) salt or soluble potassium (K) salt one wherein, solubility calcium (Ca) salt or soluble magnesium (Mg) salt one wherein, and soluble Zn (Zn) salt;
Described soluble sodium salt is sodium chloride or sodium sulphate, and described soluble potassium salt is potassium chloride or potassium sulfate, and described soluble calcium salt is calcium chloride, and described solubility magnesium salts is magnesium chloride or magnesium sulfate, and described soluble zinc salt is zinc chloride or zinc sulfate;
Each component proportion is by mass percentage:
Active carbon is 92.5% ~ 98.5%;
Soluble sodium salt is 0.5% ~ 5.0%;
Soluble potassium salt is 0.5% ~ 2.5%;
Soluble calcium salt is 0.5% ~ 2.5%;
Solubility magnesium salts is 0.5% ~ 5.0%;
Soluble zinc salt is 0.5% ~ 2.5%.
Proportioning every increasing or decreasing 0.1% or 0.5% in span of each component all can be used as a selectable specific embodiment.
Further, the preferred content scope of each component is: by percentage to the quality, carrier active carbon is 94 ~ 96%, soluble sodium salt is 2.0% ~ 4.0%, soluble potassium salt is 1.0% ~ 2.0%, soluble calcium salt is 1.0% ~ 2.0%, solubility magnesium salts is 2.0% ~ 4.0%, and soluble zinc salt is 1.0% ~ 2.0%.
Further, the index of described active carbon is: bulk density 0.45g/ml, hardness 97, particle size 0.6 ~ 1.7mm, ash content 2%(wt, percentage by weight).
According to said components and proportioning, The present invention gives the preparation method of the above-mentioned cleanser for adsorbing volatile oxidn in MTP tail gas, comprising the following steps:
(1) get soluble sodium salt or soluble potassium salt a kind of, soluble calcium salt wherein or solubility magnesium salts one wherein and soluble zinc salt by proportioning, three kinds of soluble metallic salts are mixed with respectively sodium salt or the sylvite aqueous solution, calcium salt or magnesium salt solution, zinc salt solution;
By percentage to the quality, be 1.5% ~ 7.0% containing soluble sodium salt or sylvite in described sodium salt or the sylvite aqueous solution, surplus is water, and in span, every increasing or decreasing 0.1% all can be used as a selectable specific embodiment; Be 1.5% ~ 7.0% containing soluble calcium salt or magnesium salts in described calcium salt or magnesium salt solution, surplus is water, and in span, every increasing or decreasing 0.1% all can be used as a selectable specific embodiment; Containing soluble zinc salt in described zinc salt solution is 1.0% ~ 4.0%, and surplus is water, and in span, every increasing or decreasing 0.1% all can be used as a selectable specific embodiment;
(2) active carbon is got by proportioning, after sodium salt or the sylvite aqueous solution, calcium salt or magnesium salt solution, zinc salt solution mixing, again using active carbon as carrier impregnation containing three kinds of soluble metallic salts the aqueous solution in, under 75 ~ 85 DEG C of conditions, in span, every increasing or decreasing 1 DEG C all can be used as a selectable specific embodiment, mechanical agitation 4 ~ 6 hours, in span, every increasing or decreasing 1min all can be used as a selectable specific embodiment, make soluble metallic salt be carried on active carbon, obtain the solution of supported active metals carrier;
(3) by the solution of described supported active metals carrier under 70 ~ 80 DEG C of conditions, in span, every increasing or decreasing 1 DEG C all can be used as a selectable specific embodiment, dry 6 ~ 8 hours, in span, every increasing or decreasing 1min all can be used as a selectable specific embodiment, obtains the activated carbon granule of supported active metals carrier;
(4) by the activated carbon granule of described supported active metals carrier, be 68% ~ 70%(percent by volume by concentration, concentration can be 68,69 or 70%) nitric acid and concentration be 50%(percent by volume) hydrogen peroxide by 1:1(volume ratio) mixing after carry out oxidation processes, soaking at room temperature 4 hours;
(5) activated carbon granule of the supported active metals carrier after oxidation processes is filtered out, with distilled water washing, until the pH value of the activated carbon granule of supported active metals carrier is 5 ~ 7; Such as pH value is 5,6 or 7, draws by the pH value measuring the rear distilled water of washing;
(6) under baking temperature 110 ~ 120 DEG C of conditions, in span, every increasing or decreasing 1 DEG C all can be used as a selectable specific embodiment, make the activated carbon granule drying 8 ~ 10 hours of the supported active metals carrier after washing, in span, every increasing or decreasing 1min all can be used as a selectable specific embodiment, obtains finished product cleanser.
By percentage to the quality, be 1.0% ~ 4.0% containing soluble sodium salt or sylvite in finished product cleanser, soluble calcium salt or magnesium salts are 1.0% ~ 4.0%, soluble zinc salt is 1.0% ~ 2.0%; Carrier active carbon is 94% ~ 96%.The weight percentage of the active component reality of load on carrier, different with the percentage composition in solution.
Be below some specific embodiments.
Embodiment 1
Take 3.2g sodium chloride, 4.8g magnesium chloride containing six crystallizations water, 3.8g zinc chloride and 100mL water are mixed with mixed solution, are then immersed by 40g activated carbon granule in the mixed solution prepared, and stir 4 hours at 75 DEG C.Dry 6 hours at 80 DEG C, obtain the particle of supported active metals carrier.The particle of supported active metals carrier is immersed in the mixed solution of the nitric acid of 68% ~ 70% and the hydrogen peroxide 1:1 of 50%, soaking at room temperature 4 hours.Detecting its pH value with distilled water washing after filtering out particle is 5 ~ 7.Under baking temperature 110 DEG C of conditions, dry 10 hours, obtain finished product cleanser.Cleanser active component: sodium chloride mass percent is 2.0%, magnesium chloride mass percent is 2.0%, and zinc chloride mass percent is 2.0%; Carrier quality percentage is 94%.
Embodiment 2
Take 1.5g potassium chloride, 2.5g calcium chloride containing two crystallizations water, 3.8g zinc chloride and 100mL water are mixed with mixed solution, are then immersed by 40g activated carbon granule in the mixed solution prepared, and stir 4 hours at 80 DEG C.Dry 7 hours at 75 DEG C, obtain the particle of supported active metals carrier.The particle of supported active metals carrier is immersed in the mixed solution of the nitric acid of 68% ~ 70% and the hydrogen peroxide 1:1 of 50%, soaking at room temperature 4 hours.Detecting its pH value with distilled water washing after filtering out particle is 5 ~ 7.Under baking temperature 120 DEG C of conditions, dry 10 hours, obtain finished product cleanser.Cleanser active component: potassium chloride mass percent is 1.0%, calcium chloride mass percent is 1.0%, and zinc chloride mass percent is 2.0%; Carrier quality percentage is 96%.
Embodiment 3
Take 3.6g sodium sulphate containing ten crystallizations water, 4.1g magnesium sulfate containing seven crystallizations water, 2.2g zinc sulfate is mixed with mixed solution containing seven crystallizations water and 100mL water, is then immersed by 40g activated carbon granule in the mixed solution prepared, and stirs 5 hours at 85 DEG C.Dry 8 hours at 70 DEG C, obtain the particle of supported active metals carrier.The particle of supported active metals carrier is immersed in the mixed solution of the nitric acid of 68% ~ 70% and the hydrogen peroxide 1:1 of 50%, soaking at room temperature 4 hours.Detecting its pH value with distilled water washing after filtering out particle is 5 ~ 7.Under baking temperature 110 DEG C of conditions, dry 8 hours, obtain finished product cleanser.Cleanser active component: sodium sulfate quality percentage is 2.0%, magnesium sulfate mass percent is 2.0%, and zinc sulfate mass percent is 1.0%; Carrier quality percentage is 95%.
Embodiment 4
Take 3.7g potassium sulfate, 4.3g calcium chloride, 2.2g zinc sulfate is mixed with mixed solution containing seven crystallizations water and 100mL water, is then immersed by 40g activated carbon granule in the mixed solution prepared, and stirs 5 hours at 80 DEG C.Dry 6 hours at 72 DEG C, obtain the particle of supported active metals carrier.The particle of supported active metals carrier is immersed in the mixed solution of the nitric acid of 68% ~ 70% and the hydrogen peroxide 1:1 of 50%, soaking at room temperature 4 hours.Detecting its pH value with distilled water washing after filtering out particle is 5 ~ 7.Under baking temperature 115 DEG C of conditions, dry 9 hours, obtain finished product cleanser.Active component: potassium sulfate mass percent is 2.0%, calcium chloride mass percent is 2.0%, and zinc sulfate mass percent is 1.0%; Carrier quality percentage is 95%.
Embodiment 5
Take 6.1g sodium chloride, 2.2g calcium chloride containing two crystallizations water, 2.2g zinc sulfate is mixed with mixed solution containing seven crystallizations water and 100mL water, is then immersed by 40g activated carbon granule in the mixed solution prepared, and stirs 6 hours at 75 DEG C.Dry 7.5 hours at 78 DEG C, obtain the particle of supported active metals carrier.The particle of supported active metals carrier is immersed in the mixed solution of the nitric acid of 68% ~ 70% and the hydrogen peroxide 1:1 of 50%, soaking at room temperature 4 hours.Detecting its pH value with distilled water washing after filtering out particle is 5 ~ 7.Under baking temperature 110 DEG C of conditions, dry 8.5 hours, obtain finished product cleanser.Active component: sodium chloride mass percent is 4.0%, calcium chloride mass percent is 1.0%, and zinc sulfate mass percent is 1.0%; Carrier quality percentage is 94%.
Embodiment 6
Take 1.6g potassium chloride, 7.4g magnesium chloride containing six crystallizations water, 1.8g zinc chloride and 100mL water are mixed with mixed solution, are then immersed by 40g activated carbon granule in the mixed solution prepared, and stir 4 hours at 85 DEG C.Dry 6.5 hours at 75 DEG C, obtain the particle of supported active metals carrier.The particle of supported active metals carrier is immersed in the mixed solution of the nitric acid of 68% ~ 70% and the hydrogen peroxide 1:1 of 50%, soaking at room temperature 4 hours.Detecting its pH value with distilled water washing after filtering out particle is 5 ~ 7.Under baking temperature 120 DEG C of conditions, dry 9.5 hours, obtain finished product cleanser.Active component: potassium chloride mass percent is 1.0%, magnesium chloride mass percent is 4.0%, and zinc sulfate mass percent is 1.0%; Carrier quality percentage is 94%.
Effect after purification
As accompanying drawing 1, be 15mm by cleanser (one of embodiment 1 ~ 6 is any) loading internal diameter, in the purification pipe 2 of long 100mm, left end 3 and the right-hand member 1 of purification pipe are provided with screw thread, pipeline and left end 3 and right-hand member 1 are spirally connected, MTP tail gas can be passed in purification pipe 2 by the road and purified treatment is carried out to it.Described MTP tail gas is: containing 105.2ppm (volume fraction) gas of dimethyl ether, 15.6ppm (volume fraction) diethyl ether gas, 12.7ppm(volume fraction) positive propionic aldehyde gas, 78.4ppm (volume fraction) acetone gas, 9.9ppm (volume fraction) methanol gas, 16.8ppm (volume fraction) ethanol, 63.3ppm (volume fraction) normal propyl alcohol, 90.2ppm (volume fraction) n-butanol gas MTP mixing propylene tail gas, this tail gas passes into the purification pipe 2 that cleanser is housed with 100mL/min.Tail gas after purification continues to monitor 10 hours.Before and after inner exhaust gas purification in 10 hours, as shown in Figure 2, the volatility oxygenatedchemicals chromatographic peak after purification in tail gas all disappears contrast gas-chromatography surveillance map, and its content is cleaned absorption and is less than 0.5ppm (volume fraction).Figure 2 shows that the superposition of two chromatograms, after purification, chromatographic peak disappears, and flushes, be not easy to find out with baseline, and owing to using same concentration tail gas so six groups of data are completely the same, therefore Fig. 2 spectrogram represents.
The content be not described in detail in this description belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1., for adsorbing the cleanser of volatile oxidn in MTP tail gas, comprising carrier and active component, it is characterized in that:
Described carrier is active carbon,
Described active component comprises: soluble sodium salt or soluble potassium salt a kind of, soluble calcium salt wherein or solubility magnesium salts one wherein, and soluble zinc salt;
Each component proportion is by mass percentage:
Active carbon is 92.5% ~ 98.5%;
Soluble sodium salt is 0.5% ~ 5.0%;
Soluble potassium salt is 0.5% ~ 2.5%;
Soluble calcium salt is 0.5% ~ 2.5%;
Solubility magnesium salts is 0.5% ~ 5.0%;
Soluble zinc salt is 0.5% ~ 2.5%.
2. as claimed in claim 1 for adsorbing the cleanser of volatile oxidn in MTP tail gas, it is characterized in that: described soluble sodium salt is sodium chloride or sodium sulphate, described soluble potassium salt is potassium chloride or potassium sulfate, described soluble calcium salt is calcium chloride, described solubility magnesium salts is magnesium chloride or magnesium sulfate, and described soluble zinc salt is zinc chloride or zinc sulfate.
3. as claimed in claim 1 for adsorbing the cleanser of volatile oxidn in MTP tail gas, it is characterized in that: the proportioning of each component by percentage to the quality, carrier active carbon is 94 ~ 96%, soluble sodium salt is 2.0% ~ 4.0%, soluble potassium salt is 1.0% ~ 2.0%, soluble calcium salt is 1.0% ~ 2.0%, solubility magnesium salts is 2.0% ~ 4.0%, and soluble zinc salt is 1.0% ~ 2.0%.
4. as claimed in claim 1 for adsorbing the cleanser of volatile oxidn in MTP tail gas, it is characterized in that: the index of described active carbon is: bulk density 0.45g/ml, hardness 97, particle size 0.6 ~ 1.7mm, ash content 2%.
5. for adsorbing the preparation method of the cleanser of volatile oxidn in MTP tail gas, it is characterized in that: described cleanser comprises carrier and active component,
Described carrier is active carbon,
Described active component comprises: soluble sodium salt or soluble potassium salt a kind of, soluble calcium salt wherein or solubility magnesium salts one wherein, and soluble zinc salt;
Each component proportion is by mass percentage:
Active carbon is 92.5% ~ 98.5%;
Soluble sodium salt is 0.5% ~ 5.0%;
Soluble potassium salt is 0.5% ~ 2.5%;
Soluble calcium salt is 0.5% ~ 2.5%;
Solubility magnesium salts is 0.5% ~ 5.0%;
Soluble zinc salt is 0.5% ~ 2.5%
Concrete preparation technology comprises the following steps:
(1) get soluble sodium salt or soluble potassium salt a kind of, soluble calcium salt wherein or solubility magnesium salts one wherein and soluble zinc salt by proportioning, three kinds of soluble metallic salts are mixed with respectively sodium salt or the sylvite aqueous solution, calcium salt or magnesium salt solution, zinc salt solution;
(2) active carbon is got by proportioning, after sodium salt or the sylvite aqueous solution, calcium salt or magnesium salt solution, zinc salt solution mixing, again using active carbon as carrier impregnation containing three kinds of soluble metallic salts the aqueous solution in, under 75 ~ 85 DEG C of conditions, mechanical agitation 4 ~ 6 hours, make soluble metallic salt be carried on active carbon, obtain the solution of supported active metals carrier;
(3) by the solution of described supported active metals carrier under 70 ~ 80 DEG C of conditions, dry 6 ~ 8 hours, obtain the activated carbon granule of supported active metals carrier;
(4) by the activated carbon granule of described supported active metals carrier, with concentration be 68% ~ 70% nitric acid and concentration be 50% hydrogen peroxide by 1:1 mixing after carry out oxidation processes, soaking at room temperature 4 hours;
(5) activated carbon granule of the supported active metals carrier after oxidation processes is filtered out, with distilled water washing, until the pH value of the activated carbon granule of supported active metals carrier is 5 ~ 7;
(6) under baking temperature 110 ~ 120 DEG C of conditions, make the activated carbon granule drying 8 ~ 10 hours of the supported active metals carrier after washing, obtain finished product cleanser.
6. as claimed in claim 5 for adsorbing the preparation method of the cleanser of volatile oxidn in MTP tail gas, it is characterized in that: in step (1), by percentage to the quality, be 1.5% ~ 7.0% containing soluble sodium salt or sylvite in described sodium salt or the sylvite aqueous solution, surplus is water; Be 1.5% ~ 7.0% containing soluble calcium salt or magnesium salts in described calcium salt or magnesium salt solution, surplus is water; Containing soluble zinc salt in described zinc salt solution is 1.0% ~ 4.0%, and surplus is water.
7. as claimed in claim 5 for adsorbing the preparation method of the cleanser of volatile oxidn in MTP tail gas, it is characterized in that: in finished product cleanser, by percentage to the quality, be 1.0% ~ 4.0% containing soluble sodium salt or sylvite in finished product cleanser, soluble calcium salt or magnesium salts are 1.0% ~ 4.0%, soluble zinc salt is 1.0% ~ 2.0%; Carrier active carbon is 94% ~ 96%.
8. as claimed in claim 5 for adsorbing the preparation method of the cleanser of volatile oxidn in MTP tail gas, it is characterized in that: described soluble sodium salt is sodium chloride or sodium sulphate, described soluble potassium salt is potassium chloride or potassium sulfate, described soluble calcium salt is calcium chloride, described solubility magnesium salts is magnesium chloride or magnesium sulfate, and described soluble zinc salt is zinc chloride or zinc sulfate.
9. as claimed in claim 5 for adsorbing the preparation method of the cleanser of volatile oxidn in MTP tail gas, it is characterized in that: the proportioning of each component by percentage to the quality, carrier active carbon is 94 ~ 96%, soluble sodium salt is 2.0% ~ 4.0%, soluble potassium salt is 1.0% ~ 2.0%, soluble calcium salt is 1.0% ~ 2.0%, solubility magnesium salts is 2.0% ~ 4.0%, and soluble zinc salt is 1.0% ~ 2.0%.
10. as claimed in claim 5 for adsorbing the preparation method of the cleanser of volatile oxidn in MTP tail gas, it is characterized in that: the index of described active carbon is: bulk density 0.45g/ml, hardness 97, particle size 0.6 ~ 1.7mm, ash content 2%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106311134A (en) * | 2015-06-24 | 2017-01-11 | 中国石油化工股份有限公司 | Solid scavenger and preparation method therefor |
| CN106311133A (en) * | 2015-06-24 | 2017-01-11 | 中国石油化工股份有限公司 | Solid scavenger and preparation method therefor |
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| CN1814345A (en) * | 2006-03-01 | 2006-08-09 | 那风换 | Composite metal chloride catalyst and its production process |
| CN102151543A (en) * | 2011-03-16 | 2011-08-17 | 浙江大学 | Preparation method, product and application of catalytic activity nano particle loaded absorbent |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106311134A (en) * | 2015-06-24 | 2017-01-11 | 中国石油化工股份有限公司 | Solid scavenger and preparation method therefor |
| CN106311133A (en) * | 2015-06-24 | 2017-01-11 | 中国石油化工股份有限公司 | Solid scavenger and preparation method therefor |
| CN106311133B (en) * | 2015-06-24 | 2018-12-28 | 中国石油化工股份有限公司 | Solid purificant and preparation method thereof |
| CN106311134B (en) * | 2015-06-24 | 2019-03-26 | 中国石油化工股份有限公司 | Solid purificant and preparation method thereof |
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| Publication number | Publication date |
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| CN104248944B (en) | 2016-09-28 |
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