CN103071470A - Absorbent pelletizing method - Google Patents
Absorbent pelletizing method Download PDFInfo
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- CN103071470A CN103071470A CN2011103285019A CN201110328501A CN103071470A CN 103071470 A CN103071470 A CN 103071470A CN 2011103285019 A CN2011103285019 A CN 2011103285019A CN 201110328501 A CN201110328501 A CN 201110328501A CN 103071470 A CN103071470 A CN 103071470A
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Abstract
The invention provides an absorbent pelletizing method comprising the step that: a powder material used in absorbent shaping is pelletized in a rotation pelletizing device. The method is characterized in that the water content in the powder material used in absorbent shaping is 30-45wt%. With the method provided by the invention, during the pelletizing proved, dust amount is low, powder material loss is low, and working environment is greatly improved. The method provided by the invention is easy to operate, such that labor intensity is greatly reduced, and production efficiency is improved.
Description
Technical field
The invention provides a kind of method of adsorbent balling-up.
Background technology
Moulding is one of master operation of industrial preparation adsorbent.By moulding, the particle that can provide shape, size, intensity to suit.Wherein, spheric granules is because filling is even, and accumulation property is good, weares and teares each other little, is widely used.
Rotating balling-up is a kind of pelletizing method of commonly using, and it mainly is that powder is dropped into rotary container, at rotation process Zhong Jiashui, add powder, makes material repeatedly tumbling middle reunion, compacting, round as a ball, grows up gradually, and finishing screen is got the bead of required size.
CN1184702A discloses a kind of forming method of spheroidal adsorbent; the method is carried out moulding as follows: with X-type or Y zeolite crystal powder, kaolin or/and bentonite or/and aluminium oxide, sodium cellulosate and pore forming agent (or/and lignin) are mixed into mixed powder; send into and add water formation particulate in the comminutor; send in the sugar coating machine and water, dry powder rolling balling shape particle, drying, activation form again again.
CN1358566A discloses a kind of preparation method of adsorbent, the method is carried out as follows: be that X-type zeolite powder or the former powder of y-type zeolite, bonding agent and the expanding agent of 0.5-2 μ m is mixed into dry powder with particle, through or carefully process post-drying without adding water mill, be ground into powder; Add in the comminutor rotating disk, spray the water smoke rolling balling.
In the method for above-mentioned rotation balling-up, all be in rotating machinery, the limit adds the dry powder limit and squirts, repeatedly rolling balling.Yet produce air-flow when rotating owing to equipment, airborne dust is large when therefore adding dry powder, operating environment is relatively poor, causes the material race to be decreased serious, and product yield is lower; The powder water spray is wayward in rotating the balling-up process in addition, need very careful, thereby otherwise easily produce the phenomenons such as sticking wall, caking and increase labour intensity and affect production efficiency.
Summary of the invention
The object of the invention is to provide on the basis of existing technology a kind of and reduce airborne dust, improve operating environment, reduce powder and run and decrease, improve product yield and the manageable adsorbent pelletizing method of process.
The tradition balling technique is that the limit adds dry powder in rotating balling-up equipment, and the limit squirts, repeatedly rolling balling.Generation air-flow when rotating owing to equipment, airborne dust is large when therefore adding dry powder, operating environment is relatively poor causes the material race to be decreased seriously, and product yield lowers; Powder water spray is wayward in the rotational forming process in addition, need very careful, thereby otherwise easily produce the phenomenons such as sticking wall, caking and increase labour intensity and affect production efficiency.The present inventor proposes in advance powder wetting to certain water content (thereby prior art it is generally acknowledged send into after powder prewetted in the balling-up equipment easily so that disperse the inhomogeneous balling-up effect that causes bad even can't carry out balling-up in forming process at all), then send into and rotate in the balling-up equipment, need to add water or not add water according to balling technique again and carry out moulding, can eliminate the aforementioned drawback of traditional balling technique according to this forming method.
The invention provides a kind of method of adsorbent balling-up, the method comprises: a kind of powder for adsorbent-shaping is sent into rotated balling-up equipment and carry out balling-up, wherein, the water content of described powder for adsorbent-shaping is the 30-45 % by weight.
Few according to airborne dust in the method balling-up process of the present invention, powder runs to decrease and lacks, and has greatly improved operating environment; And method of the present invention is highly susceptible to operation, has greatly alleviated labour intensity, has improved production efficiency.
The specific embodiment
The invention provides a kind of method of adsorbent balling-up, the method comprises: a kind of powder for adsorbent-shaping is sent into rotated balling-up equipment and carry out balling-up, wherein, the water content of described powder for adsorbent-shaping is the 30-45 % by weight.
Namely can realize goal of the invention of the present invention according to preceding method of the present invention, in order better to realize goal of the invention of the present invention, for the present invention, under the preferable case, the water content of described powder for adsorbent-shaping is the 35-43 % by weight, more preferably the 39-41 % by weight.
The powder that is used for adsorbent-shaping described in the present invention can be filled a prescription by prior art, for example generally speaking, described powder for adsorbent-shaping contains binding agent and adsorbent, and described for the powder binding agent of adsorbent-shaping and optional wider range of weight ratio of adsorbent.For the present invention, under the preferable case, in butt, the weight ratio of binding agent and adsorbent is 0.02-0.25: 1, and 0.12-0.18 more preferably: 1.
According to the present invention, the selectable range of the kind of described adsorbent is wider, this area adsorbent commonly used all can be realized purpose of the present invention, for the present invention, under the preferable case, described adsorbent is one or more in silica gel, molecular sieve, activated alumina and the active carbon, and more preferably described adsorbent is molecular sieve.
According to the present invention, the selectable range of the kind of described molecular sieve is wider, and this area molecular sieve commonly used all can be realized purpose of the present invention, for the present invention, under the preferable case, described molecular sieve is one or more in A type molecular sieve, X-type molecular sieve, the Y zeolite.For the present invention, further the water content of preferred described molecular sieve is the 23-28 % by weight, more preferably the 25-28 % by weight.
Among the present invention, the selectable range of the kind of described binding agent is wider, this area binding agent commonly used all can be realized purpose of the present invention, for the present invention, under the preferable case, described binding agent is one or more in clay, Ludox, aluminium colloidal sol and the waterglass, and more preferably described binding agent is clay.
Among the present invention, the selectable range of the kind of described clay is wider, and this area clay commonly used all can be realized purpose of the present invention, and for the present invention, under the preferable case, described clay is one or more in kaolin, bentonite, the attapulgite.
The method according to this invention, those skilled in the art all know, sending into the powder that rotates in the balling-up equipment generally all is the powders that mix, no matter how many its water content is, the described powder for adsorbent-shaping that the present invention uses also is mixed uniformly powder, because this is for well known to a person skilled in the art technology, the present invention does not do lay special stress on.
Among the present invention, preparing described powder for adsorbent-shaping of the present invention can have a variety of, as long as so that the water content of the powder for adsorbent-shaping of the present invention reaches requirement of the present invention, generally speaking, in the process of prior art adsorbent-shaping, the large usage quantity of adsorbent, the mixed powder of possible adsorbent and binding agent (water content is generally the 18-26.5 % by weight) can't reach the water content of the present invention's expection, therefore, the present invention needs the extra on the basis of existing technology water that adds to fill a prescription.
According to of the present invention preferred embodiment a kind of, described powder for adsorbent-shaping is prepared as follows: described binding agent and described adsorbent are mixed obtain pulverulent mixture, and described pulverulent mixture is contacted with water droplets stirring under the state.
According to the present invention, under the preferable case, optionally, can also in the step of pelletizing method of the present invention, introduce auxiliary agent, the introducing method of described auxiliary agent can have multiple, for example can rotate balling-up equipment and carry out adding auxiliary agent in the process of balling-up a kind of powder for adsorbent-shaping is sent into, also can in powder, introduce auxiliary agent before rotating balling-up equipment powder is sent into, give unnecessary details no longer one by one at this.The selection of the kind of described auxiliary agent can be carried out with reference to prior art (such as thinking expanding agent etc.), does not repeat them here.
Among the present invention, describedly binding agent and adsorbent are mixed the method that obtains pulverulent mixture can carry out with reference to prior art, mix after for example adsorbent and binding agent can being pulverized adsorbent and/or binding agent as required and get final product.
The present invention is to stirring the condition that contacts with water droplets under the state without specific (special) requirements with described pulverulent mixture, as long as so that described powder for adsorbent-shaping of the present invention reach water content that the present invention requires and mixing comparatively evenly, the time of described contact can be according to the consumption of concrete water droplets, select with the water content of the powder of requirement.Among the present invention, can adopt dispersing apparatus to realize described pulverulent mixture is contacted with water droplets stirring under the state.
Described dispersing apparatus can be dispersing apparatus well known in the art, is generally interior equipment with agitation means, for example can be kneader, banbury, double-cone mixer or trough type mixing machine, wherein is preferably kneader or banbury.
Among the present invention, can adopt atomizing lance jet atomization water droplet so that water droplets required for the present invention to be provided, thereby make as far as possible the water droplets particle more thin better can be so that itself and pulverulent mixture mix, generally speaking, for so that described pulverulent mixture mix with water droplets after dispersity better (namely mixing), the particle diameter of described water droplets can be 0.1-500 μ m.Described atomizing lance can be pressure type atomizing lance or ultrasonic type atomizing lance, and the shower nozzle of atomizing lance can also can be many shower nozzles for the single spraying head, the present invention to this without all without specific (special) requirements.
Among the present invention, described powder for adsorbent-shaping sent into rotate the method that balling-up equipment carries out balling-up and can carry out with reference to prior art, for pelletizing method of the present invention, generally can comprise the steps: with described powder for adsorbent-shaping send into rotate balling-up equipment after, then need to add water or not add water according to balling technique and rotate balling-up.Among the present invention, the concrete addition of water can specifically be selected according to the water content that prior art is generally rotated in the required water yield of balling-up and the powder of the present invention, and what of the addition of described water on method of the present invention without too large impact, therefore, de-emphasize in an embodiment the addition of water.
Among the present invention, described rotation balling-up equipment can for the rotation balling-up equipment of the various same use of prior art, for example can be granulating disc, roller pelletizer or coating pan.
According to the present invention, under the preferable case, adopt the average grain diameter of the spherical adsorbent that pelletizing method of the present invention obtains less than 1mm.
Below by specific embodiment the present invention is described in detail, but scope of the present invention is not limited to this.
In the example, the strength detection method is seen Chinese patent CN1261201C, represents with the percentage of damage under the 250N pressure, and percentage of damage is lower, and intensity is better.
Among the present invention, the butt quality refers in 600 ℃ of lower calcinations 1 hour, cooled weight in drier.
Embodiment 1
With NaY molecular sieve (oven drying, water content is 27 % by weight) and kaolin (Linfen, Shanxi kaolin factory, water content is 21 % by weight) compare mixing by 88: 12 butt quality, drop into kneader, middlely prewetted 10 minutes with the pressure type atomizing lance stirring, powder is prewetted to 41 % by weight from moisture 26.28 % by weight, and the powder that obtains mixes.Be that the pre-wet mash of 41 % by weight drops into spin (Intermediate View moisture evaporation situation takes the circumstances into consideration to add a small amount of water) in the granulating disc with water content; grow up to the bead that particle diameter is not more than 1mm; the percentage of damage of bead under 250N is 25.2%, satisfies the specification requirement of adsorbent percentage of damage≤30%.
In the balling-up process, be 41 % by weight because wet mash is moisture in advance, dropping in the granulating disc does not almost have airborne dust, and site environment is greatly improved, and powder runs and decreases obviously reduction, produces bead consumption powder per ton (take butt) and is 1.05 tons; Simultaneously, because pre-wet mash added and the required suitable water yield of balling-up, so only need replenish a small amount of moisture that volatilizees in the balling-up process during balling-up, wet, wall sticking phenomenon minimizing with excessivelying, balling-up time shorten 1/3rd, labour intensity alleviates.
Embodiment 2
Method according to embodiment 1 is carried out balling-up, and different is that the water content of the rear powder of prewetting is 35 % by weight.Obtain the bead that particle diameter is not more than 1mm, the percentage of damage of bead under 250N is 28.0%.And because the water yield that need add in the spin process is more, prolonged the long ball time, increased labour intensity.
Embodiment 3
Method according to embodiment 1 is carried out balling-up, and different is that the water content of the rear powder of prewetting is 43 % by weight.Obtain the bead that particle diameter is not more than 1mm, the percentage of damage of bead under 250N is 26.5%.
Embodiment 4
Method according to embodiment 1 is carried out balling-up, and different is that the water content of the rear powder of prewetting is 39 % by weight.Obtain the bead that particle diameter is not more than 1mm, the percentage of damage of bead under 250N is 24.0%.
Embodiment 5
Method according to embodiment 1 is carried out balling-up, different is, with ZSM-5 molecular sieve (oven drying, water content is 26 % by weight) and kaolin (Linfen, Shanxi kaolin factory, water content is 21 % by weight) compare mixing by 86: 14 butt quality, drop into kneader, stir middle with the pressure type atomizing lance prewet to water content be 41 % by weight, all the other steps are all identical.Obtain the bead that particle diameter is not more than 1mm, the percentage of damage of bead under 250N is 27.3%, satisfies the specification requirement of the percentage of damage of adsorbent≤30%.
Embodiment 6
Method according to embodiment 1 is carried out balling-up, different is, with MCM-22 molecular sieve (oven drying, water content is 25 % by weight) and bentonite (Anji County, Zhejiang Province bentonite factory, water content is 23 % by weight) compare mixing by 85: 15 butt quality, drop into kneader, stir middle with the pressure type atomizing lance prewet to water content be 40 % by weight, all the other steps are all identical.Obtain the bead that particle diameter is not more than 1mm, the percentage of damage of bead under 250N is 26.6%, satisfies the specification requirement of the percentage of damage of adsorbent≤30%.
Embodiment 7
Method according to embodiment 1 is carried out balling-up, different is, with ZSM-35 molecular sieve (oven drying, water content is 27 % by weight) and attapulgite (Mingguang, anhui attapulgite factory, water content is 22 % by weight) compare mixing by 88: 12 butt quality, drop into kneader, stir middle with the pressure type atomizing lance prewet to water content be 41 % by weight, all the other steps are all identical.Obtain the bead that particle diameter is not more than 1mm, the percentage of damage of bead under 250N is 28.1%, satisfies adsorbent≤30% specification requirement.
Comparative Examples 1
With NaY molecular sieve (oven drying; water content 27 % by weight) with kaolin (Linfen, Shanxi kaolin factory; water content is 21 % by weight) compare mixing by 88: 12 butt quality; drop in the granulating disc; spray water and carry out roller forming while adding powder; grow up to the bead that particle diameter is not more than 1mm, the percentage of damage of bead under 250N is 28%.
Coating pan in the forming process is owing to rotating, produce air-flow at the pot mouth, airborne dust is serious when throwing powder, on the ground, on the equipment, the operative employee falls to having expired powder with it, add that a considerable amount of powders are siphoned away by the deduster of pot mouth top, material runs and decreases seriously, bead consumption dry mash (in butt) 1.27 tons per ton; When the water spray humidification, excessively wet for avoiding the part, adopt on a small quantity repeatedly water spray, the production time is longer, and easily sticking wall, reunion form the problems such as large ball float, needs artificial clear wall, with instrument large ball is broken up, and has increased labour intensity.
Comparative Examples 2
Method according to embodiment 1 is carried out balling-up, and different is, the water content of the rear powder of prewetting is 50 % by weight, finds too wetly, generates large ball piece.
Claims (10)
1. the method for an adsorbent balling-up, the method comprises: a kind of powder for adsorbent-shaping is sent into rotated balling-up equipment and carry out balling-up, it is characterized in that, the water content of described powder for adsorbent-shaping is the 30-45 % by weight.
2. method according to claim 1, wherein, the water content of described powder for adsorbent-shaping is the 35-43 % by weight, is preferably the 39-41 % by weight.
3. method according to claim 1 and 2, wherein, described powder for adsorbent-shaping contains binding agent and adsorbent, and in butt, the weight ratio of binding agent and adsorbent is 0.02-0.25: 1, be preferably 0.12-0.18: 1.
4. method according to claim 3, wherein, described powder for adsorbent-shaping is prepared as follows: described binding agent and described adsorbent are mixed obtain pulverulent mixture, and described pulverulent mixture is contacted with water droplets stirring under the state.
5. method according to claim 3, wherein, described adsorbent is one or more in silica gel, molecular sieve, activated alumina and the active carbon.
6. method according to claim 5, wherein, described adsorbent is molecular sieve.
7. method according to claim 6, wherein, the water content of described molecular sieve is the 23-28 % by weight.
8. method according to claim 3, wherein, described binding agent is one or more in clay, Ludox, aluminium colloidal sol and the waterglass.
9. method according to claim 8, wherein, described binding agent is clay.
10. method according to claim 9, wherein, described clay is one or more in kaolin, bentonite, the attapulgite.
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| CN201110328501.9A CN103071470B (en) | 2011-10-25 | 2011-10-25 | Absorbent pelletizing method |
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| CN201110328501.9A CN103071470B (en) | 2011-10-25 | 2011-10-25 | Absorbent pelletizing method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105080467A (en) * | 2015-09-08 | 2015-11-25 | 江苏爱尔环保科技有限公司 | Adsorbent used for adsorbing ammonia gas in rooms and automobiles and preparation method thereof |
| CN105294324A (en) * | 2015-12-04 | 2016-02-03 | 内蒙古民族大学 | Novel carbon-based compound fertilizer and preparation method thereof |
| CN105727833A (en) * | 2014-12-08 | 2016-07-06 | 中国石油化工股份有限公司 | Pellet seed preparation and pelletization methods |
| CN106311124A (en) * | 2016-08-17 | 2017-01-11 | 上海久宙化学品有限公司 | Aluminum oxide and preparing technology thereof |
| WO2017059536A1 (en) * | 2015-10-08 | 2017-04-13 | The Carbon Basis Company Ltd. | Biochar products and method of manufacture thereof |
| CN109454744A (en) * | 2018-11-26 | 2019-03-12 | 安徽金岩高岭土科技有限公司 | Coaseries kaolin raw ore fecula balling technique |
| CN110882679A (en) * | 2018-09-07 | 2020-03-17 | 中国石油化工股份有限公司 | Composite material for treating sewage and preparation method thereof |
| CN111732148A (en) * | 2020-06-29 | 2020-10-02 | 河海大学 | System for retrieve phosphate in follow surface eutrophic water |
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| CN105727833A (en) * | 2014-12-08 | 2016-07-06 | 中国石油化工股份有限公司 | Pellet seed preparation and pelletization methods |
| CN105727833B (en) * | 2014-12-08 | 2019-11-15 | 中国石油化工股份有限公司 | A method of preparing bead seed and balling-up |
| CN105080467A (en) * | 2015-09-08 | 2015-11-25 | 江苏爱尔环保科技有限公司 | Adsorbent used for adsorbing ammonia gas in rooms and automobiles and preparation method thereof |
| WO2017059536A1 (en) * | 2015-10-08 | 2017-04-13 | The Carbon Basis Company Ltd. | Biochar products and method of manufacture thereof |
| CN108138028A (en) * | 2015-10-08 | 2018-06-08 | 碳基有限公司 | Charcoal product and its manufacturing method |
| US10518244B2 (en) * | 2015-10-08 | 2019-12-31 | The Carbon Basis Company Ltd. | Biochar products and method of manufacture thereof |
| CN105294324A (en) * | 2015-12-04 | 2016-02-03 | 内蒙古民族大学 | Novel carbon-based compound fertilizer and preparation method thereof |
| CN106311124A (en) * | 2016-08-17 | 2017-01-11 | 上海久宙化学品有限公司 | Aluminum oxide and preparing technology thereof |
| CN110882679A (en) * | 2018-09-07 | 2020-03-17 | 中国石油化工股份有限公司 | Composite material for treating sewage and preparation method thereof |
| CN109454744A (en) * | 2018-11-26 | 2019-03-12 | 安徽金岩高岭土科技有限公司 | Coaseries kaolin raw ore fecula balling technique |
| CN111732148A (en) * | 2020-06-29 | 2020-10-02 | 河海大学 | System for retrieve phosphate in follow surface eutrophic water |
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