CN202440323U - Carbonizer for producing nano calcium carbonate - Google Patents
Carbonizer for producing nano calcium carbonate Download PDFInfo
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- CN202440323U CN202440323U CN2012200854037U CN201220085403U CN202440323U CN 202440323 U CN202440323 U CN 202440323U CN 2012200854037 U CN2012200854037 U CN 2012200854037U CN 201220085403 U CN201220085403 U CN 201220085403U CN 202440323 U CN202440323 U CN 202440323U
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Abstract
The utility model discloses a carbonizer for producing nano calcium carbonate. The carbonizer comprises a calcium hydroxide blending pool, a calcium hydroxide size storage pool, a primary carbonization and nucleation reactor, a primary carbonization and growth reactor, a primary carbonization and ageing pool, a secondary carbonization tubular reactor and a calcium carbonate activating pool, which are connected in sequence, wherein size carbonization reaction pipes provided with continuous repeated arch-shaped structures on both ends and carbon dioxide porous reaction pipes provided with continuous repeated arch-shaped structures on both ends are arranged in the primary carbonization and nucleation reactor, the primary carbonization and growth reactor and the secondary carbonization tubular reactor. In a process for producing the nano calcium carbonate by the carbonizer provided by the utility model, a calcium carbonate nucleation stage and a growth stage adopt subsection production and sub-step control, so that the nano calcium carbonate with uniform size distribution, regular crystal structure and stable quality can be continuously produced, meanwhile, the carbonizer has the advantages of small device investment, short carbonization time, low energy consumption and the like.
Description
Technical field
The utility model relates to a kind of equipment of producing nano-calcium carbonate, particularly a kind of novel carbonization reactor of continuous production nano-calcium carbonate.
Background technology
Carburizing reagent is in a gas, liquid, solid three-phase reaction system, to carry out, and wherein relates to the deposition and the calcium carbonate particles nucleating growth process of the dissolving of calcium hydroxide solid, carbon dioxide gas bulk absorption, lime carbonate." carborization " is to prepare the method that generally adopts in the lime carbonate at present both at home and abroad, and the carbonization process of calcium hydroxide and carbon dioxide reaction is a most key step.At present both at home and abroad the carbonization method of comparative maturity has four kinds: intermittently bubbling style carborization, intermittently stirring-type carborization, multistage spray carbonation method and hypergravity formula carborization intermittently continuously.Wherein see the low two kinds of method height then of preceding two kinds of methods from the cost aspect; From investment situation, also be the low two kinds of method height then of preceding two kinds of methods.So it is main producing the many two kinds of methods in the past of nano-calcium carbonate both at home and abroad; Intermittently the bubbling style carborization, intermittently the stirring-type carborization is stirrer is housed or does not adorn in the carbonating tower of stirrer leading to after the calcium hydroxide slurry refrigeration that is added with additives such as dispersion agent and crystal formation directed agents; At the bottom of tower, lead to dioxide gas, calcium hydroxide and carbon dioxide reaction generate ZG 301.The variation of the crystal habit of factor affecting lime carbonate such as because Gu calcium hydroxide and carbonic acid gas are the thermopositive reaction that gas-liquid-three contacts, gas distribution is inhomogeneous, the continuous rising of temperature of reaction.The weak point of these two kinds of carbonization modes is following: the product crystal structure irregularity of 1) producing has a very wide distribution with series-produced product cut size; 2) reaction times longer, the carbonic acid gas utilization ratio is low; 3) be difficult to realize complete monitoring, difficult realization control automatically to carbonization process; 4) lime carbonate nucleation and growth phase wherein carry out in same carburizing reagent, are difficult to the particle diameter of control lime carbonate, cause the product fluctuation big.
The utility model content
The problem that the utility model need solve is that lime carbonate nucleation and growth phase be not separately in the prior art; Be difficult to the particle diameter of control lime carbonate; Cause product fluctuation big, this is designed a kind of continuous production, size distribution evenly, regular crystal forms, product favorable reproducibility, carbonization time is short, the carbonic acid gas utilization ratio is high, lime carbonate nucleation stage and the response situation of each particle in the whole carbonization process is controlled and can be monitored to growth phase step by step and the carbonizing apparatus of level of response is a carbonizer.
The utility model is realized through following technical scheme according to the above-mentioned a kind of carbonizer of producing nano-calcium carbonate that needs the problem design of solution:
A kind of carbonizer of producing nano-calcium carbonate; Comprise the calcium hydroxide preparing pool; The calcium hydroxide slurry storage pool that is attached thereto; This carbonizer comprises that also an interconnective successively carbonization becomes nuclear reactor, a carbonization growth reactor, a carbonization ageing pond, secondary carbonization tubular reactor and lime carbonate activation pond, and a described carbonization becomes nuclear reactor to be connected with the slurries output terminal of calcium hydroxide slurry storage pool.
A described carbonization becomes to be provided with slurries ingress pipe, slurries carburizing reagent pipe and the discharge pipe that from top to bottom connects successively in the nuclear reactor; The one end mouth of pipe of described slurries ingress pipe extends to this reactor drum and is connected with the slurries output terminal of calcium hydroxide slurry storage pool through pipeline outward.
Be provided with the slurries ingress pipe, slurries carburizing reagent pipe and the discharge pipe that from top to bottom connect successively in the described carbonization growth reactor; The one end mouth of pipe of the slurries ingress pipe of a described carbonization growth reactor extends to outside this reactor drum and becomes the discharge pipe of nuclear reactor to be connected through pipeline with a carbonization, and the discharge pipe of a described carbonization growth reactor is connected with the slurries input terminus in a carbonization ageing pond through pipeline.
Be provided with slurries carburizing reagent pipe in the described secondary carbonization tubular reactor; The mouth of pipe of this slurries carburizing reagent Guan Yiduan extends to this reactor drum and is connected with the slurries output terminal in a carbonization ageing pond through pipeline outward, and the another port is stretched out in this reactor bottom and is connected in the lime carbonate activation pond.
A described carbonization becomes in the slurries carburizing reagent pipe in nuclear reactor, carbonization growth reactor and the secondary carbonization tubular reactor to be provided with carbonic acid gas porous reaction pipe, and this carbonic acid gas porous reaction pipe is communicated with the carbonic acid gas input tube that is arranged at the interior side of this reactor drum.
A described carbonization becomes the carbonic acid gas porous reaction pipe in nuclear reactor, carbonization growth reactor and the secondary carbonization tubular reactor to be provided with to be used to make carbonic acid gas and the catalytic hole of slurries.
Further, a described carbonization becomes slurries ingress pipe and slurries carburizing reagent pipe and carbonic acid gas porous reaction pipe in nuclear reactor, carbonization growth reactor and inferior each reactor drum of carbonization tubular reactor to be the continuous unremitting repetition bow-shaped structural in two ends.
Further, to become the bore of the discharge pipe in nuclear reactor, the carbonization growth reactor be 2 times of bore of slurries carburizing reagent pipe in a described carbonization.
The utility model and prior art relatively, have can the continuous production size distribution evenly, very regular, the quality product of crystalline structure stabilized nano lime carbonate very, have simultaneously that facility investment is little, carbonization time short, low power consumption and other advantages.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation that a carbonization of the utility model becomes nuclear reactor;
Fig. 3 is the structural representation of a carbonization growth reactor of the utility model;
Fig. 4 is the structural representation of the secondary carbonization tubular reactor of the utility model.
Embodiment
For the ease of those skilled in the art's understanding, below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail, but specific embodiment is not done any qualification to the utility model.
Shown in accompanying drawing 1; A kind of carbonizer of producing nano-calcium carbonate; Comprise through managing the interconnective successively calcium hydroxide preparing pool of logical and pump 4, calcium hydroxide slurry storage pool 5, a carbonization and become nuclear reactor 1, carbonization growth reactor 2, carbonization ageing pond 6, secondary carbonization tubular reactor 3; This carbonizer also comprises lime carbonate activation pond 7, and the slurries carbonized tube 9 of secondary carbonization tubular reactor 3 is in lime carbonate activation pond 7.
Like accompanying drawing 1, shown in 2; A described carbonization becomes to be provided with slurries ingress pipe 8, slurries carburizing reagent pipe 9 and the discharge pipe 10 that from top to bottom connects successively in the nuclear reactor 1; The one end mouth of pipe of slurries ingress pipe 8 extends to this reactor drum and is connected with the slurries output terminal of calcium hydroxide slurry storage pool 5 through pipeline outward; Discharge pipe 10 is positioned at the bottom of this reactor drum, and is communicated with the pipeline that is connected pump.Be provided with carbonic acid gas porous reaction pipe 12 in the slurries carburizing reagent pipe 9, this carbonic acid gas porous reaction pipe 12 is communicated with the carbonic acid gas input tube 11 that is arranged at this reactor drum right side, and is provided with and is used to make carbonic acid gas and the catalytic hole of slurries.
Like accompanying drawing 1, shown in 3; A described carbonization growth reactor 2 becomes nuclear reactor 1 structure identical with a carbonization; Be provided with the slurries ingress pipe 8, slurries carburizing reagent pipe 9 and the discharge pipe 10 that from top to bottom connect successively in this carbonization growth reactor 2; The one end mouth of pipe of slurries ingress pipe 8 extends to outside this reactor drum and becomes the discharge pipe 10 of nuclear reactor 1 to be connected through a pipeline and a carbonization, and the discharge pipe 10 of a carbonization growth reactor 2 is connected with the slurries input terminus in a carbonization ageing pond 6.Be provided with carbonic acid gas porous reaction pipe 12 in the slurries carburizing reagent pipe 9, this carbonic acid gas porous reaction pipe 12 is communicated with the carbonic acid gas input tube 11 that is arranged at this reactor drum one side, and is provided with and is used to make carbonic acid gas and the catalytic hole of slurries.
Like accompanying drawing 1, shown in 4; Be provided with slurries carburizing reagent pipe 9 and carbonic acid gas input tube 11 in the described secondary carbonization tubular reactor 3; In slurries carburizing reagent pipe 9, be provided with carbonic acid gas porous reaction pipe 12, described carbonic acid gas porous reaction pipe 9 is communicated with carbonic acid gas input tube 11 and is provided with and is used to make carbonic acid gas and the catalytic hole of slurries; The mouth of pipe of slurries carburizing reagent pipe 9 one ends of this secondary carbonization tubular reactor extends to this reactor drum and is connected with the slurries output terminal in a carbonization ageing pond 6 through pipeline outward, and the another port is stretched out in this reactor bottom and is connected in the lime carbonate activation pond 7.
Wherein, A carbonization becomes the slurries ingress pipes 8 in nuclear reactor 1, carbonization growth reactor 2 and the secondary carbonization tubular reactor 3 to be the continuous unremitting repetition bow-shaped structural in two ends with slurries carburizing reagent pipe 9 and carbonic acid gas porous reaction pipe 12, and the bore of discharge pipe 10 is 2 times of bore of slurries carburizing reagent pipe 9.
Describe the workflow and the method for use of the utility model below in detail, so that the technical characterictic and the advantage of the utility model are carried out more deep annotation.
Utilize above-mentioned carbonizer to produce the method for nano-calcium carbonate, its step is following:
1) modulation of calcium hydroxide slurry:
In the calcium hydroxide preparing pool, allocate the concentration of calcium hydroxide slurry, and in calcium hydroxide slurry, added crystal formation directed agents and dispersion agent sodium hexametaphosphate, and mixing and stirring;
2) storage of calcium hydroxide slurry:
To in the calcium hydroxide preparing pool, allocate good slurries is extracted into and stores in the calcium hydroxide slurry storage pool;
3) carbonization nucleation reaction treatment:
Slurries in the calcium hydroxide slurry storage pool are led to a carbonization become the slurries ingress pipe in the nuclear reactor; And become the carbonic acid gas input tube in the nuclear reactor to feed dioxide gas through purifying treatment toward a carbonization; Make slurries and dioxide gas contact reacts in slurries carburizing reagent pipe; Obtain calcium hydroxide and lime carbonate mixing suspension, reacted slurries are discharged from the discharge pipe in this reactor drum;
4) a carbonization growth response is handled:
The reacted slurries of carbonization nucleation are led to the slurries ingress pipe in the carbonization growth reactor one time; And the carbonic acid gas input tube in carbonization growth reactor feeds the dioxide gas through purifying treatment; Make calcium hydroxide and dioxide gas contact reacts in slurries carburizing reagent pipe in the slurries; Obtain the nano-calcium carbonate slurries, reacted slurries are discharged from the discharge pipe of this reactor drum;
5) ageing is handled:
Slurries after the carbonization growth response are led in a carbonization ageing pond carry out ageing, remove the impurity in the nano-calcium carbonate slurries and make the particle diameter of nano-calcium carbonate even;
6) the secondary carburizing reagent is handled:
Slurries after ageing is handled have the calcium hydroxide of a small amount of accumulation of salt in the surface soil; To be extracted into the slurries carburizing reagent pipe of secondary carbonization tubular reactor at the slurries after the carbonization ageing pond ageing; And the carbonic acid gas input tube in carbonization growth reactor feeds the dioxide gas through purifying treatment, makes calcium hydroxide and dioxide gas contact reacts in slurries carburizing reagent pipe in the slurries;
7) activation treatment:
To in secondary carbonization tubular reactor, lead to lime carbonate activation pond by reacted nano-calcium carbonate slurries, and add tensio-active agent and handle;
8) dehydrate processing:
To dewater at the slurries after the lime carbonate activation pond activation, drying treatment, obtain required nano-calcium carbonate calcium product.
In the described step 1), the mass concentration of the calcium hydroxide slurry of said allotment is 5%～15%; Described crystal formation directed agents is a kind of in magnesium chloride, sal epsom, the water glass, and the crystal formation directed agents of being added and the quality of dispersion agent sodium hexametaphosphate are to account for calcium hydroxide in the calcium hydroxide slurry in 0.1%～2% of the quality percentage composition of base.
In described step 3), step 4) and the step 6), the dioxide gas that feeds in each carburizing reagent is the dioxide gas of volumetric concentration >=20%, and controls the speed of reaction of each carburizing reagent through the size of control flow of carbon dioxide gas amount.
In described step 3), step 4) and the step 6), carry out the carbonization temperature that each carburizing reagent is controlled in heat exchange through slurries in the slurries carburizing reagent pipe and the outer water of pipe in each carburizing reagent.
Adjusting calcium hydroxide mass concentration is 6%～15% calcium hydroxide slurry in the calcium hydroxide preparing pool, and the good back of allotment is stored calcium hydroxide slurry in the calcium hydroxide slurry storage pool into.The temperature of the calcium hydroxide slurry in the calcium hydroxide slurry storage pool is controlled between 10 ℃～30 ℃; And to add the quality percentage composition account for the calcium hydroxide butt be that in 0.1%～2% crystal formation directed agents magnesium chloride, sal epsom, the water glass one or more add 0.1～2% dispersion agent sodium hexametaphosphate again; After the mixing and stirring; Become to pump into calcium hydroxide slurry in the nuclear reactor toward a carbonization; And become the dioxide gas that feeding has purified in the nuclear reactor toward a carbonization, the volumetric concentration of carbonic acid gas >=20%, the dioxide gas of feeding with in the continuous contact reacts of slurries carburizing reagent Guan Zhongyu slurries.
Size through control flow of carbon dioxide gas amount is controlled speed of reaction; Carry out heat exchange through slurries in the slurries carburizing reagent pipe and the outer water of pipe; The control carbonization temperature is between 10 ℃～30 ℃; Viscosity through slurries in the monitoring slurries carburizing reagent pipe changes, and control a carbonization nucleation reacting slurry viscosity is 800mpa.s～950mpa.s, when monitor when the carbonization slurry viscosity of layer 800mpa.s～950mpa.s at present the slurries carburizing reagent pipe of one deck stop to lead to dioxide gas.
Lead to a carbonization grower to the slurries after becoming the nuclear reactor internal reaction a carbonization; Be controlled at the temperature of time carbonization grower between 10 ℃～30 ℃; The dioxide gas that feeds volumetric concentration >=20% of process purifying treatment carries out carbonization;, making two ends unremitting slurries and the continuous contact reacts of dioxide gas that repeats in the arched slurries carburizing reagent pipe continuously, reacted slurries flow out from the discharge pipe of a carbonization growth reactor bottom; Resulting slurry pH value is 7～8, particle diameter be about 30nm, size distribution evenly, the nano-calcium carbonate slurries of good dispersivity.
The nano-calcium carbonate slurries that become the nuclear reactor internal reaction to obtain a carbonization lead to a carbonization ageing pond ageing and are extracted into slurries in the slurries carburizing reagent pipe of secondary carbonization tubular reactor after 1～6 day; Slurries after ageing have the calcium hydroxide of a small amount of accumulation of salt in the surface soil; Carbonic acid gas input tube toward secondary carbonization tubular reactor feeds the dioxide gas through volumetric concentration >=20% of purifying treatment, and itself and calcium hydroxide slurry are reacted.
Directly lead to lime carbonate activation pond to the slurries after reacting in the secondary carbonization tubular reactor; And interpolation surfactant treatment; Dehydrate processing to the slurries after the activation treatment at last, can obtain size distribution evenly, good dispersivity, particle diameter be the nano-calcium carbonate about 30nm.
Adjusting calcium hydroxide mass concentration is 5%～10% calcium hydroxide slurry in the calcium hydroxide preparing pool, and the good back of allotment is stored calcium hydroxide slurry in the calcium hydroxide slurry storage pool into.The temperature of the calcium hydroxide slurry in the calcium hydroxide slurry storage pool is controlled between 10 ℃～30 ℃; And to add the quality percentage composition account for the calcium hydroxide butt be that in 0.4% crystal formation directed agents magnesium chloride, sal epsom, the water glass one or more add 0.2～2% dispersion agent sodium hexametaphosphate again; After the mixing and stirring; Become to pump into calcium hydroxide slurry in the nuclear reactor toward a carbonization; And become the dioxide gas that feeding has purified in the nuclear reactor toward a carbonization, the volumetric concentration of carbonic acid gas >=20%, the dioxide gas of feeding with in the continuous contact reacts of slurries carburizing reagent Guan Zhongyu slurries.
Size through control flow of carbon dioxide gas amount is controlled speed of reaction; Carry out heat exchange through slurries in the slurries carburizing reagent pipe and the outer water of pipe; The control carbonization temperature is between 10 ℃～30 ℃; Viscosity through slurries in the monitoring slurries carburizing reagent pipe changes, and control a carbonization nucleation reacting slurry viscosity is 700mpa.s～850mpa.s, when monitor when the carbonization slurry viscosity of layer 700mpa.s～850mpa.s at present the slurries carburizing reagent pipe of one deck stop to lead to dioxide gas.
Lead to a carbonization grower to the slurries after becoming the nuclear reactor internal reaction a carbonization; Be controlled at the temperature of time carbonization grower between 10 ℃～30 ℃; The dioxide gas that feeds volumetric concentration >=20% of process purifying treatment carries out carbonization;, making two ends unremitting slurries and the continuous contact reacts of dioxide gas that repeats in the arched slurries carburizing reagent pipe continuously, reacted slurries flow out from the discharge pipe of a carbonization growth reactor bottom; Resulting slurry pH value is 7～8, particle diameter be about 80nm, size distribution evenly, the nano-calcium carbonate slurries of good dispersivity.
The nano-calcium carbonate slurries that become the nuclear reactor internal reaction to obtain a carbonization lead to a carbonization ageing pond ageing and are extracted into slurries in the slurries carburizing reagent pipe of secondary carbonization tubular reactor after 1～6 day; Slurries after ageing have the calcium hydroxide of a small amount of accumulation of salt in the surface soil; Carbonic acid gas input tube toward secondary carbonization tubular reactor feeds the dioxide gas through volumetric concentration >=20% of purifying treatment, and itself and calcium hydroxide slurry are reacted.
Directly lead to lime carbonate activation pond to the slurries after reacting in the secondary carbonization tubular reactor; And interpolation surfactant treatment; Dehydrate processing to the slurries after the activation treatment at last, can obtain size distribution evenly, good dispersivity, particle diameter be the nano-calcium carbonate about 80nm.
Adjusting calcium hydroxide mass concentration is 5%～10% calcium hydroxide slurry in the calcium hydroxide preparing pool, and the good back of allotment is stored calcium hydroxide slurry in the calcium hydroxide slurry storage pool into.The temperature of the calcium hydroxide slurry in the calcium hydroxide slurry storage pool is controlled between 20 ℃～40 ℃; And add the dispersion agent sodium hexametaphosphate that the quality percentage composition account for the calcium hydroxide butt is a kind of in 0.3% crystal formation directed agents magnesium chloride, sal epsom, the water glass and 0.2～2%; After the mixing and stirring; Become to pump into calcium hydroxide slurry in the nuclear reactor toward a carbonization; And become the dioxide gas that feeding has purified in the nuclear reactor toward a carbonization, the volumetric concentration of carbonic acid gas >=20%, the dioxide gas of feeding with in the continuous contact reacts of slurries carburizing reagent Guan Zhongyu slurries.
Size through control flow of carbon dioxide gas amount is controlled speed of reaction; Carry out heat exchange through slurries in the slurries carburizing reagent pipe and the outer water of pipe; The control carbonization temperature is between 32 ℃～33 ℃; Viscosity through slurries in the monitoring slurries carburizing reagent pipe changes, and control a carbonization nucleation reacting slurry viscosity is 600mpa.s～650mpa.s, when monitor when the carbonization slurry viscosity of layer 600mpa.s～650mpa.s at present the slurries carburizing reagent pipe of one deck stop to lead to dioxide gas.
Lead to a carbonization grower to the slurries after becoming the nuclear reactor internal reaction a carbonization; Be controlled at the temperature of time carbonization grower between 34 ℃～35 ℃; The dioxide gas that feeds volumetric concentration >=20% of process purifying treatment carries out carbonization;, making two ends unremitting slurries and the continuous contact reacts of dioxide gas that repeats in the arched slurries carburizing reagent pipe continuously, reacted slurries flow out from the discharge pipe of a carbonization growth reactor bottom; Resulting slurry pH value is 7～8, particle diameter be about 120nm, size distribution evenly, the nano-calcium carbonate slurries of good dispersivity.
The nano-calcium carbonate slurries that become the nuclear reactor internal reaction to obtain a carbonization lead to a carbonization ageing pond ageing and are extracted into slurries in the slurries carburizing reagent pipe of secondary carbonization tubular reactor after 1～6 day; Slurries after ageing have the calcium hydroxide of a small amount of accumulation of salt in the surface soil; Carbonic acid gas input tube toward secondary carbonization tubular reactor feeds the dioxide gas through volumetric concentration >=20% of purifying treatment, and itself and calcium hydroxide slurry are reacted.
Directly lead to lime carbonate activation pond to the slurries after reacting in the secondary carbonization tubular reactor; And interpolation surfactant treatment; Dehydrate processing to the slurries after the activation treatment at last, can obtain size distribution evenly, good dispersivity, particle diameter be the nano-calcium carbonate about 120nm.
Embodiment 4
Adjusting calcium hydroxide mass concentration is 5%～10% calcium hydroxide slurry in the calcium hydroxide preparing pool, and the good back of allotment is stored calcium hydroxide slurry in the calcium hydroxide slurry storage pool into.The temperature of the calcium hydroxide slurry in the calcium hydroxide slurry storage pool is controlled between 20 ℃～45 ℃; And add the dispersion agent sodium hexametaphosphate that the quality percentage composition account for the calcium hydroxide butt is a kind of in 0.3% crystal formation directed agents magnesium chloride, sal epsom, the water glass and 0.2%; After the mixing and stirring; Become to pump into calcium hydroxide slurry in the nuclear reactor toward a carbonization; And become the dioxide gas that feeding has purified in the nuclear reactor toward a carbonization, the volumetric concentration of carbonic acid gas >=20%, the dioxide gas of feeding with in the continuous contact reacts of slurries carburizing reagent Guan Zhongyu slurries.
Size through control flow of carbon dioxide gas amount is controlled speed of reaction; Carry out heat exchange through slurries in the slurries carburizing reagent pipe and the outer water of pipe; The control carbonization temperature is between 20 ℃～45 ℃; Viscosity through slurries in the monitoring slurries carburizing reagent pipe changes, and control a carbonization nucleation reacting slurry viscosity is 500mpa.s～600mpa.s, when monitor when the carbonization slurry viscosity of layer 500mpa.s～600mpa.s at present the slurries carburizing reagent pipe of one deck stop to lead to dioxide gas.
Lead to a carbonization grower to the slurries after becoming the nuclear reactor internal reaction a carbonization; Be controlled at the temperature of a carbonization grower between 20 ℃～45 ℃; The dioxide gas that feeds volumetric concentration >=20% of process purifying treatment carries out carbonization;, making two ends unremitting slurries and the continuous contact reacts of dioxide gas that repeats in the arched slurries carburizing reagent pipe continuously, reacted slurries flow out from the discharge pipe of a carbonization growth reactor bottom; Resulting slurry pH value is 7～8, particle diameter be about 200nm, size distribution evenly, the nano-calcium carbonate slurries of good dispersivity.
The nano-calcium carbonate slurries that become the nuclear reactor internal reaction to obtain a carbonization lead to a carbonization ageing pond ageing and are extracted into slurries in the slurries carburizing reagent pipe of secondary carbonization tubular reactor after 1～6 day; Slurries after ageing have the calcium hydroxide of a small amount of accumulation of salt in the surface soil; Carbonic acid gas input tube toward secondary carbonization tubular reactor feeds the dioxide gas through volumetric concentration >=20% of purifying treatment, and itself and calcium hydroxide slurry are reacted.
Directly lead to lime carbonate activation pond to the slurries after reacting in the secondary carbonization tubular reactor; And interpolation surfactant treatment; Dehydrate processing to the slurries after the activation treatment at last, can obtain size distribution evenly, good dispersivity, particle diameter be the nano-calcium carbonate about 200nm.
Claims (8)
1. carbonizer of producing nano-calcium carbonate; Comprise calcium hydroxide preparing pool (4); The calcium hydroxide slurry storage pool (5) that is attached thereto; It is characterized in that: this carbonizer comprises that also an interconnective successively carbonization becomes nuclear reactor (1), a carbonization growth reactor (2), a carbonization ageing pond (6), secondary carbonization tubular reactor (3) and lime carbonate activation pond (7), and a described carbonization becomes nuclear reactor (1) to be connected with the slurries output terminal of calcium hydroxide slurry storage pool (5).
2. the carbonizer of production nano-calcium carbonate according to claim 1 is characterized in that: a described carbonization becomes to be provided with slurries ingress pipe (8), slurries carburizing reagent pipe (9) and the discharge pipe (10) that from top to bottom connects successively in the nuclear reactor (1); The one end mouth of pipe of described slurries ingress pipe (8) extends to this reactor drum and is connected with the slurries output terminal of calcium hydroxide slurry storage pool (5) through pipeline outward.
3. the carbonizer of production nano-calcium carbonate according to claim 2 is characterized in that: be provided with the slurries ingress pipe (8), slurries carburizing reagent pipe (9) and the discharge pipe (10) that from top to bottom connect successively in the described carbonization growth reactor (2); The one end mouth of pipe of the slurries ingress pipe (8) of a described carbonization growth reactor (2) extends to outside this reactor drum and becomes the discharge pipe (10) of nuclear reactor (1) to be connected through a pipeline and a carbonization, and the discharge pipe (10) of a described carbonization growth reactor (2) is connected with the slurries input terminus in a carbonization ageing pond (6) through pipeline.
4. the carbonizer of production nano-calcium carbonate according to claim 3; It is characterized in that: be provided with slurries carburizing reagent pipe (9) in the described secondary carbonization tubular reactor (3); The mouth of pipe of these slurries carburizing reagent pipe (9) one ends extends to this reactor drum and is connected with the slurries output terminal in a carbonization ageing pond (6) through pipeline outward, and the another port is stretched out in this reactor bottom and is connected in the lime carbonate activation pond (7).
5. the carbonizer of production nano-calcium carbonate according to claim 4; It is characterized in that: a described carbonization becomes in the slurries carburizing reagent pipe (9) in nuclear reactor (1), a carbonization growth reactor (2) and the secondary carbonization tubular reactor (3) to be provided with carbonic acid gas porous reaction pipe (12), and this carbonic acid gas porous reaction pipe (12) is communicated with the carbonic acid gas input tube (11) that is arranged at the interior side of this reactor drum.
6. the carbonizer of production nano-calcium carbonate according to claim 5 is characterized in that: a described carbonization becomes the carbonic acid gas porous reaction pipe (12) in nuclear reactor (1), a carbonization growth reactor (2) and the secondary carbonization tubular reactor (3) to be provided with to be used to make carbonic acid gas and the catalytic hole of slurries.
7. the carbonizer of production nano-calcium carbonate according to claim 6 is characterized in that: a described carbonization becomes the slurries ingress pipe (8) in nuclear reactor (1), a carbonization growth reactor (2) and the secondary carbonization tubular reactor (3) to be the continuous unremitting repetition bow-shaped structural in two ends with slurries carburizing reagent pipe (9) and carbonic acid gas porous reaction pipe (12).
8. according to the carbonizer of each described production nano-calcium carbonate in the claim 1～7, it is characterized in that: it is 2 times of bore of slurries carburizing reagent pipe (9) that a described carbonization becomes the bore of the discharge pipe (10) in the nuclear reactor (1), a carbonization growth reactor (2).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103172100A (en) * | 2011-12-23 | 2013-06-26 | 杨晓林 | Method for preparing calcium carbonate in different grain sizes |
| CN104843757A (en) * | 2015-04-16 | 2015-08-19 | 四川海雅粉体科技有限责任公司 | Coil pipe type nano calcium carbonate carbonization system |
| CN107473253A (en) * | 2017-09-29 | 2017-12-15 | 广西华洋矿源材料有限公司 | A kind of production method of nano-calcium carbonate |
| CN112811456A (en) * | 2021-01-26 | 2021-05-18 | 江西势通钙业有限公司 | Nano calcium carbonate with high specific surface area and preparation method thereof |
| CN117623358A (en) * | 2023-11-21 | 2024-03-01 | 杭州正和纳米科技有限公司 | Process and device for producing high-dispersion superfine active calcium carbonate |
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2012
- 2012-03-02 CN CN2012200854037U patent/CN202440323U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103172100A (en) * | 2011-12-23 | 2013-06-26 | 杨晓林 | Method for preparing calcium carbonate in different grain sizes |
| CN104843757A (en) * | 2015-04-16 | 2015-08-19 | 四川海雅粉体科技有限责任公司 | Coil pipe type nano calcium carbonate carbonization system |
| CN107473253A (en) * | 2017-09-29 | 2017-12-15 | 广西华洋矿源材料有限公司 | A kind of production method of nano-calcium carbonate |
| CN112811456A (en) * | 2021-01-26 | 2021-05-18 | 江西势通钙业有限公司 | Nano calcium carbonate with high specific surface area and preparation method thereof |
| CN117623358A (en) * | 2023-11-21 | 2024-03-01 | 杭州正和纳米科技有限公司 | Process and device for producing high-dispersion superfine active calcium carbonate |
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