CN101391109A - Preparation method of compound air purification agent - Google Patents
Preparation method of compound air purification agent Download PDFInfo
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- CN101391109A CN101391109A CNA2008101222140A CN200810122214A CN101391109A CN 101391109 A CN101391109 A CN 101391109A CN A2008101222140 A CNA2008101222140 A CN A2008101222140A CN 200810122214 A CN200810122214 A CN 200810122214A CN 101391109 A CN101391109 A CN 101391109A
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Abstract
The invention discloses a preparation method of composite air purificant, comprising of an ore dressing step, a purifying step, a mixing step, a modification step, a granulation step, a roasting step and a finished product detecting and packing step, wherein in the ore dressing step, at least four purely natural mineral material ore concentrates with adsorbing ability are selected; in the purifying step, the selected mineral materials are purified; in the mixing step, the purified mineral material and proper caking agent are mixed properly according to weight ratio; in the modification step, modifying agent and vesicant are added, semi-drying modification is performed by adopting a kneader and drying is carried out in normal temperature; in the granulation step, a granulating machine is adopted for granulating, and active hole slash is carried out by controlling the temperature to 50 DEG C to 80 DEG C; in the roasting step, roasting activation is carried out by controlling the temperature to 200 DEG C to 300 DEG C; and in the finished product detecting and packing step, through screen separation, proper adsorption indicator allochroic silicagel particles are added, and the finished product is detected and packed to obtain composite purificant. The invention has the advantage that the performance of the product is excellent, the technology is energy-saving and environmental-friendly and can be repeatedly used; a user can intuitively judge that when regeneration is needed, the manufacture cost is low, and the like.
Description
Technical field
The present invention relates to a kind of preparation of composite air purifying agent, particularly be applicable to the preparation method of a kind of composite air purifying agent that the semidry method modified active is produced.
Background technology
The adsorption cleaning method is at present for one of most widely used method in the method for treating indoor air pollution.Wherein: activated carbon of sorbent has the good adsorption detergent power, but price is more expensive relatively.In recent years, some natural minerals are as novel adsorbing material, have aboundresources, cheap, characteristics such as adsorptivity is strong, and product is environmentally friendly, have been subjected to paying close attention to widely, as zeolite, kieselguhr, Montmorillonitum, rectorite etc.For obtaining higher adsorption cleaning disposal ability, need to natural minerals purify, deep processing transformation such as modification, perhaps carry out the compound of multiple natural minerals, this has become the emphasis of environment mineral material research.Point out as document [Zhai Bin, the environment mineral material application in pollution control, northern environment, 2005,30 (2): 69-72]: zeolite is after the NaCl modification, and is better to the adsorption effect of ammonia nitrogen; Document [experimentation that Cheng Lun, diatomite composite material purify the air of a room, environmental protection science, 2007,33 (3): 16-19] is pointed out: after the kieselguhr modification was compound, the removal ability of PARA FORMALDEHYDE PRILLS(91,95), benzene, ammonia was significantly higher than common kieselguhr.
China Patent No. 200310112788.7 " superfine compound active adsorbing absorbent-type indoor air purification agent " discloses a kind of superfine compound active adsorbing absorbent-type indoor air purification agent, will be through the attapulgite clay after activation processing and the super-fine processing or sepiolite clay and zeolite by suitable proportioning mixing, make up pelletize and oven dry, mix according to a certain percentage with granular active carbon again, promptly obtain " superfine compound active adsorbing absorbent-type indoor air purification agent ".But it has the following disadvantages: (1) needs mineral material is soaked activation with acid or alkali, uses the clear water rinsing afterwards, and producing a large amount of waste water in the preparation process needs to handle, and environmental protection pressure is big; (2) need the 800-2000 order is arrived in the dried mineral material superfine grinding of activation, consume energy higher, volume of production is limited; (3) need increase cost with 5 to 60% active carbon; (4) mineral material is not purified and the modification processing, be unfavorable for the bigger raising of its absorbability; (5) when the user can't in use lose efficacy by this cleanser of intuitive judgment.
Summary of the invention
Technical problem to be solved by this invention is the present situation at prior art, provides a kind of with low cost, and technology is simple, at any time the preparation method of the composite air purifying agent of the absorption value of this cleanser of intuitive judgment.By selecting for use several to have the pure natural mineral material of absorbability, after purification, proportioning, modification, pelletize, roasting, prepare composite purifying agent.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of preparation method of composite air purifying agent, comprise beneficiation steps: select at least four kinds of pure natural mineral material concentrate for use, wherein: also in proper order through following steps: after purification step, proportioning step, modification procedure, granulation step, the calcination steps preparation with absorbability; The finished product detection packaging step obtains composite purifying agent;
Purification step: the mineral material of selecting for use is carried out purification processes respectively;
Proportioning step:, carry out suitable proportioning by weight and mix to mineral material and the suitable binder after several purifications;
Modification procedure: add modifier, foaming agent, adopt kneader to carry out semidry method modification, normal temperature drying;
Granulation step: adopt granulator to carry out pelletize, be controlled at 50 ℃ to 80 ℃ and activate reaming;
Calcination steps: be controlled at 200 ℃ to 300 ℃ and carry out calcination activation;
Finished product detection packaging step: through screening, add an amount of adsorbance pH indicator discolour silica gel particle, with described finished product detection packing.
Further technical measures, at least four kinds of natural minerals with absorbability are choosing wherein four kinds wantonly or choosing wantonly more than four kinds in meerschaum, zeolite, kieselguhr, attapulgite, Montmorillonitum, rectorite and the discolour silica gel.
Above-mentioned modifier is sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite, its consumption be after the purification proportioning mineral material gross weight 1% to 10%.
Above-mentioned foaming agent is ammonium bicarbonate or sodium bicarbonate, its consumption be after the purification proportioning mineral material gross weight 1% to 10%.
The addition of above-mentioned adsorbance pH indicator discolour silica gel particle is 0.5% to 5% of a gross weight.
Compared with prior art, the present invention has the pure natural mineral material of absorbability by selecting several for use, prepares composite purifying agent after purification, proportioning, modification, pelletize, roasting.Characteristics of the present invention are: (1) selects the pure natural mineral material with absorbability for use, reduces the cost of raw material; (2) through purification, modification, activation, improve its absorbability, make the superior performance of cleanser; (3) adopt semidry method modification, technology environmental protection; (4) adopt the method for foaming agent to increase specific surface area, replace ultrafine grinding process, cut down the consumption of energy; (5) adopting suitable binder can reach product is high-intensity spherical structure, guarantees pollution-freely in process of production, nontoxic, harmless, and product is very degraded; In transportation, storage, use, there is not dust; (6) product that obtains after the roasting is have enough mechanical strengths spherical, and the back of losing efficacy only needs through daylight or the dehumidifying of other thermal source just renewable, so almost repeated use that can be unlimited economizes on resources; (7) this cleanser is with the indicator of discolour silica gel as the absorption value, and when discolour silica gel becomes when pink or dark red, expression needs dried with regeneration to cleanser; (8) the technology advantages of simple is cheap for manufacturing cost, is fit to produce in batches.Therefore the present invention has excellent product performance, energy saving technology environmental protection, but when reusable and user's intuitive judgment needs advantages such as regeneration, suitable suitability for industrialized production cheap for manufacturing cost.
Description of drawings
Fig. 1 is an embodiment of the invention process flow diagram.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 1: specifically comprise ore dressing, purification, proportioning, modification, drying, pelletize, activation, roasting, screening, interpolation indicator, finished product detection packing.
Embodiment 1:
(1) ore dressing: select zeolite, kieselguhr, Montmorillonitum, meerschaum totally four kinds of pure natural mineral material concentrate with absorbability for use, content is all more than 60%;
(2) purify: four kinds of mineral materials selecting for use are carried out purification processes respectively;
(3) proportioning: to the mineral material after four kinds of purifications, carry out proportioning and mix, weight ratio is zeolite 10% to 40%, kieselguhr 5% to 20%, montmorillonite 2 0% to 60%, meerschaum 10% to 40%;
Modification: modifier is sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite, its consumption be after the purification proportioning mineral material gross weight 1% to 10%.Foaming agent is ammonium bicarbonate or sodium bicarbonate, its consumption be after the purification proportioning mineral material gross weight 1% to 10%.The suitable proportioning of weight by mineral material after the purification proportioning takes by weighing sodium chloride, sodium sulfite and carbon ammonium respectively, and both in an amount of water behind the mixed dissolution, are added mineral material together in kneader, reaches semidry method modification purpose by kneading repeatedly;
(4) drying: normal temperature drying;
(5) pelletize: adopt granulator to carry out pelletize, granularity is 0.5mm to a 5mm scope;
(6) activation: 50 ℃ to 80 ℃ activate reaming;
(7) roasting: 200 ℃ to 300 ℃ are carried out calcination activation;
(8) screening;
(9) add adsorbance pH indicator discolour silica gel particle, addition is 0.5% of a gross weight;
(10) finished product detection packing.
Prepared composite air purifying agent can adsorb harmful gass such as removing formaldehyde, benzene, ammonia fast, and the dynamic adsorption clearance was respectively 90%, 85% and 99% in 2 hours.
Embodiment 2:
(1) ore dressing: select zeolite, rectorite, meerschaum, attapulgite totally four kinds of pure natural mineral material concentrate with absorbability for use, content is all more than 60%;
(2) purify: four kinds of mineral materials selecting for use are carried out purification processes respectively;
(3) proportioning: to the mineral material after four kinds of purifications, carry out proportioning and mix, weight ratio is zeolite 10% to 40%, rectorite 5% to 15%, meerschaum 20% to 40%, attapulgite 20% to 40%;
(4) modification: modifier is sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite, its consumption be after the purification proportioning mineral material gross weight 1% to 10%.Foaming agent is ammonium bicarbonate or sodium bicarbonate, its consumption be after the purification proportioning mineral material gross weight 1% to 10%.By the suitable proportioning of weight of mineral material after the purification proportioning, weighing sodium carbonate and carbon ammonium respectively in an amount of water behind the mixed dissolution, add mineral material together in kneader with both, reach semidry method modification purpose by kneading repeatedly.
(5) drying: normal temperature drying;
(6) pelletize: adopt granulator to carry out pelletize, granularity is 0.5mm to a 5mm scope;
(7) activation: 50 ℃ to 80 ℃ activate reaming;
(8) roasting: 200 ℃ to 300 ℃ are carried out calcination activation;
(9) screening;
(10) add adsorbance pH indicator discolour silica gel particle, addition is 1% of a gross weight;
(11) finished product detection packing.
Prepared composite air purifying agent can adsorb harmful gass such as removing formaldehyde, benzene, ammonia fast, and the dynamic adsorption clearance was respectively 95%, 90% and 95% in 2 hours.
Though the present invention is described by the reference preferred embodiment,, those skilled in the art should understand, and within the scope of the invention, can do the various variation on form and the details.
Claims (5)
1, a kind of preparation method of composite air purifying agent, comprise beneficiation steps: select at least four kinds of pure natural mineral material concentrate for use, it is characterized in that: also in proper order through following steps: after purification step, proportioning step, modification procedure, granulation step, the calcination steps preparation with absorbability; The finished product detection packaging step obtains composite purifying agent; Described
Purification step: the mineral material of selecting for use is carried out purification processes respectively;
Proportioning step:, carry out suitable proportioning by weight and mix to mineral material and the suitable binder after several purifications;
Modification procedure: add modifier, foaming agent, adopt kneader to carry out semidry method modification, normal temperature drying;
Granulation step: adopt granulator to carry out pelletize, be controlled at 50 ℃ to 80 ℃ and activate reaming;
Calcination steps: be controlled at 200 ℃ to 300 ℃ and carry out calcination activation;
Finished product detection packaging step: through screening, add an amount of adsorbance pH indicator discolour silica gel particle, with described finished product detection packing.
2, the preparation method of a kind of composite air purifying agent according to claim 1, it is characterized in that: described at least four kinds of natural minerals with absorbability are choosing wherein four kinds wantonly or choosing wantonly more than four kinds in meerschaum, zeolite, kieselguhr, attapulgite, Montmorillonitum, rectorite and the discolour silica gel.
3, the preparation method of a kind of composite air purifying agent according to claim 2 is characterized in that: described modifier is sodium carbonate or sodium chloride or sodium fluoride or sodium sulfite, its consumption be after the purification proportioning mineral material gross weight 1% to 10%.
4, the preparation method of a kind of composite air purifying agent according to claim 3 is characterized in that: described foaming agent is ammonium bicarbonate or sodium bicarbonate, its consumption be after the purification proportioning mineral material gross weight 1% to 10%.
5, according to the preparation method of claim 2 or 3 or 4 described a kind of composite air purifying agents, it is characterized in that: the addition of described adsorbance pH indicator discolour silica gel particle is 0.5% to 5% of a gross weight.
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