WO2012146111A1

WO2012146111A1 - Method and system for preparing precipitated calcium carbonate

Info

Publication number: WO2012146111A1
Application number: PCT/CN2012/073086
Authority: WO
Inventors: 修国华
Original assignee: 琳德股份公司
Priority date: 2011-04-25
Filing date: 2012-03-27
Publication date: 2012-11-01
Also published as: CN102757074A; BR112013027163A2

Abstract

A method and system for preparing precipitated calcium carbonate. A first stream and a second stream of carbon dioxide are provided to an aqueous suspension of calcium oxide to form calcium carbonate. The first stream of carbon dioxide comes from a microporous rubber tube, and the second stream of carbon dioxide comes from an injection distributor. The obtained calcium carbonate suspension is separated, dried, cooled, and pulverized to retrieve precipitated calcium carbonate.

Description

说明书制备沉淀碳酉 «的方法和*** 技术领域 Description of the method and system for preparing precipitated carbon 酉 «

本发明针对一些由常规的沉淀碳酉 «的制造过程所弓 1起的环境问题。在本申请中，实施了一种制备沉淀碳酉 t ^的方法，其 1将二氧化碳气流传至氢氧化麪的 7j悬浮液中以达到与氢氧化麪反应并且搅拌该悬浮液的目的。同时，通过该方法在高纯度碳酸麪的制备中获得了高的二氧化碳碳酸盐化效率。背景技术 The present invention is directed to environmental issues arising from the manufacturing process of conventional precipitated carbonium. In the present application, a method of preparing a precipitated carbonium t ^ is carried out which transfers a carbon dioxide gas stream to a 7j suspension of a hydroxide face to achieve the purpose of reacting with a hydroxide face and stirring the suspension. At the same time, high carbon dioxide carbonation efficiency is obtained in the preparation of high-purity carbonic acid noodles by this method. Background technique

碳酸钙， CaC0₃，是一种已经在许多工业产品及日常必需品中被发现的碳酸盐，例如作为添加剂或者改性剂存在于纸、染料、墨水、粘合剂和药物中。在塑料中，碳酸麪主要用作填料以取代相对昂贵的聚合物。 Calcium carbonate, CaC0 ₃ , is a carbonate that has been found in many industrial products and everyday necessities, for example as an additive or modifier in paper, dyes, inks, adhesives and pharmaceuticals. In plastics, the carbonic acid surface is primarily used as a filler to replace relatively expensive polymers.

制备沉淀碳酉 «的一种典型的过程开始于一个煅烧过程，其中 1煅烧石灰石和焦^/无烟煤的混合物来生产氧化钙。在煅烧过程中低品质的二氧化碳共生并且被存储，该低品质的二氧化碳通常在简单的纯化后用于随后的碳酸麪的沉淀。尽管能预期到更高的操作成本，为了确保即将被沉淀的碳酸麪的高纯度 7j平，天然气取代了焦^/无烟煤被燃烧以实施沉淀过程。获得的氧化麪（生石灰）随后用水熟化来制备氢氧化麪衆液。为了获得高品质的沉淀碳酸钙，所得衆液中的一些杂质如未燃烧或过燃烧的石灰主要通过将衆液通过金属丝网的方式来除去。过滤后，悬浮在水中的氢氧化麪与二氧化碳反应。该碳化过程是通过将二氧化碳气体加入到氢氧化麪水悬浮液中实现的，在此过程中碳化温度和二氧化碳浓度维持在合适的范围内以在水相中生成所需的碳酸钙颗粒。在碳化过程完成后，获得的碳酸钙衆液再次通过金属丝网以除去任何残留的杂质。随后， 1—个离心设备从沉淀产物中分离水以形成一碳酉 «±夬体。最后，该碳酉«块体随后通过热空气干燥并且进 fi¾碎以获得所需产品。 A typical process for preparing precipitated carbonium « begins with a calcination process in which a mixture of calcined limestone and coke/anthracite is produced to produce calcium oxide. Low quality carbon dioxide is co-generated and stored during the calcination process, which is typically used for subsequent precipitation of the carbonic acid surface after simple purification. Although higher operating costs can be expected, in order to ensure a high purity of the carbonation surface to be precipitated, the natural gas replaces the coke/anthracite to be burned to carry out the precipitation process. The obtained oxidation surface (raw stone ash) is then aged with water to prepare a hydroxide surface liquid. In order to obtain high quality precipitated calcium carbonate, some of the impurities in the resulting liquid, such as unburned or overburned lime, are mainly removed by passing the liquid through the wire mesh. After filtration, the hydroxide surface suspended in water reacts with carbon dioxide. The carbonization process is carried out by adding carbon dioxide gas to the aqueous suspension of the hydroxide surface, during which the carbonization temperature and the carbon dioxide concentration are maintained within a suitable range to form the desired calcium carbonate particles in the aqueous phase. After the carbonization process is completed, the obtained calcium carbonate liquid again passes through the wire mesh to remove any residual impurities. Subsequently, a centrifugal device separates water from the precipitated product to form a carbon 酉 «± 夬 body. Finally, the carbon 酉« block is then dried by hot air and pulverized to obtain the desired product.

虽然该过程由于相对简单而典型，但它引起了一些环境问题，特别是当使用无烟煤时。石灰石矿也会引起环境问题，当本地无法获得时由于将沉重的原料运输到生产地也可能会产生巨大量的温室气体并且增加了生产成本。另外，发明内容 Although this process is typical due to its relative simplicity, it causes some environmental problems, especially when using anthracite. Limestone mines can also cause environmental problems, which can generate large amounts of greenhouse gases and increase production costs when transporting heavy raw materials to production sites when they are not available locally. In addition, Summary of the invention

本申请所描述的一种新的沉淀碳酉 «的生产方法避免了常规沉淀碳酉 «制备过程所特有的许多缺陷。该新方法的流程图示于图 1。制备沉淀碳酸麪的*** 包括一个盛有氢氧化麪水悬浮液的容器以及提供二氧化碳到所述容器中的两个气体分布器。 The production method of a new precipitated carbonium « described in the present application avoids many of the defects inherent in the conventional precipitation of carbonium «the preparation process. A flow chart of this new method is shown in Figure 1. The system for preparing a precipitated carbonated surface comprises a vessel containing a suspension of aqueous hydroxide surface and two gas distributors providing carbon dioxide to the vessel.

在这种新方法中，商业上可获得的精炼石灰粉， CaO取代了石灰石作为原料，其和二氧化碳用于生产碳酉 «。该二氧化碳从液态二氧化碳储罐中供应。对于同样的碳酸麪的生产，由于 CaO比石灰石轻，因此降低了运输成本。另一个优点是由于该气流并不含有存在于常规过程的窑尾气 (kiln off gas)中的其他干燥气，随着容器中负载了更高的氢氧化麪衆液，重要的碳酸盐化反应的二氧化碳效率可高达 90%。这使得新的方法相对于常规过程更具有经济竞争力，因为增加的生产能力会抵消购买液态二氧化碳的成本。 In this new approach, commercially available refined lime powder, CaO replaces limestone as a raw material, and carbon dioxide is used to produce carbonium. The carbon dioxide is supplied from a liquid carbon dioxide storage tank. For the production of the same carbonated surface, since CaO is lighter than limestone, transportation costs are reduced. Another advantage is that since the gas stream does not contain other drying gases present in the kiln off gas of the conventional process, as the vessel is loaded with a higher hydroxide surface, an important carbonation reaction The carbon dioxide efficiency can be as high as 90%. This makes the new method more economically competitive than conventional processes, as increased production capacity offsets the cost of purchasing liquid carbon dioxide.

沉淀碳酸麪的生产包含在气相、液相和固相及它们界面上的多相反应，例如二氧化碳气体的吸收， Ca(OH)₂固体的溶解、 CaC0₃粉体的成核和生长以及在碳酉 t¾化过程的所有阶段的 CaC0₃的沉淀。为了减少在气固界面和液固界面之间的巨大运输阻力，逆向混合作为主要方法在所述容器应用。同样地，鼓泡二氧化碳的比表面积增加，因为这对气相和液相之间的反应是至关重要的。 The production of precipitated carbonated surfaces involves heterogeneous reactions in the gas, liquid and solid phases and their interfaces, such as the absorption of carbon dioxide gas, the dissolution of Ca(OH) ₂ solids, the nucleation and growth of CaCO ₃ powder, and the carbon Precipitation of CaC0 ₃ at all stages of the 酉t3⁄4 process. In order to reduce the large transport resistance between the gas-solid interface and the liquid-solid interface, reverse mixing is applied as the primary method in the container. As such, the specific surface area of the bubbling carbon dioxide increases because this is critical for the reaction between the gas phase and the liquid phase.

更特另哋，本发明中公开的制备沉淀碳酉 «的方括为了不同的目的提供两股二氧化碳气流到氢氧化钙水悬浮液中。气态二氧化碳的第一流旨在与所述氢氧化钙反应，同时如图 2所示，二氧化碳的第二流被注入到容器中，其主要目的是搅拌氢氧化麪的水悬浮液。该二氧化碳的第^ ΐ流从一个微孔胶管或一组微孔胶管引入到悬浮液中，第二气流来自一^慚主射分布器。出于维护的方便该微孔胶管可以是自密封的。 More specifically, the preparation of precipitated carbonium « disclosed in the present invention provides for the supply of two streams of carbon dioxide to the aqueous suspension of calcium hydroxide for different purposes. The first stream of gaseous carbon dioxide is intended to react with the calcium hydroxide, and as shown in Figure 2, a second stream of carbon dioxide is injected into the vessel with the primary purpose of agitating the aqueous suspension of the hydroxide surface. The turbulent flow of carbon dioxide is introduced into the suspension from a microporous hose or a set of microporous hoses, and the second gas stream is from a primary orifice distributor. The microporous hose can be self-sealing for ease of maintenance.

在碳艦化过程完成后，所得的碳酸賺夜随后被处理以获得所需的碳酸钠产品，包括从碳酉 «中分离水，干燥、冷却和粉碎碳酉 «。在某些情况下，所得碳酸麪衆液被直接供应到应用领域而无需全部除去水，例如当它直接与纸衆混合时。氢氧化麪以氧化麪计与水的重量比为 1 : 1至 1 : 30， 7j悬浮液的初始碳酸盐化温度范围为 20°C至 60°C。 After the carbonization process is completed, the resulting carbonic acid earning night is subsequently processed to obtain the desired sodium carbonate product, including separating the water from the carbonium, drying, cooling and crushing the carbonium. In some cases, the resulting carbonated liquid is supplied directly to the application without the need to completely remove water, such as when it is directly mixed with the paper. The weight ratio of the hydroxide surface to the water is from 1:1 to 1:30, and the initial carbonation temperature of the 7j suspension ranges from 20 ° C to 60 ° C.

本发明的另一实施方式中，制备沉淀碳酸钙的方法包括歩骤： In another embodiment of the invention, a method of preparing precipitated calcium carbonate includes the steps of:

a)提供生石灰到一个水罐中以形成一氢氧化钙的水悬浮液； a) providing quicklime to a water tank to form an aqueous suspension of calcium hydroxide;

b)提供该水悬浮液到碳艦化反应器中 ·' b) provide the aqueous suspension to the carbonization reactor

c)提供二氧化碳的第一流和第二流到碳酉 t¾化反应器中以产生碳酸^ d)提供该水悬浮液和碳酉聽 1J一个分离设备中； c) providing a first stream of carbon dioxide and a second stream to the carbon 酉 t3⁄4 reactor to produce carbonic acid; d) providing the aqueous suspension and carbon hydride 1J in a separation device;

e)干燥从分离设备中回收的碳酉 «固体； e) drying carbon 回收 recovered from the separation equipment «solid;

f) P该干燥的碳酸麪固体； f) P the dried carbonic acid surface solid;

g)粉碎该卩且干燥的碳酉 «固体；以及 g) pulverizing the crucible and dry carbon 酉 «solid;

h)回收该碳酸麪。 h) recover the carbonated surface.

在进一歩的另一实施方式中，一种生产沉淀碳酸钙的***包括一个盛有氢氧化麪水悬浮液的容器，提供二氧化碳到所述容器的第一分布器和提供二氧化碳到所述容器的第二分布器。 In another embodiment of the invention, a system for producing precipitated calcium carbonate includes a vessel containing a suspension of aqueous hydroxide surface, providing carbon dioxide to the first distributor of the vessel and providing carbon dioxide to the vessel. Second distributor.

该第一分布器是一个自密封的微孔胶管，以及第二分布器是一个注射分布器。 The first distributor is a self-sealing microporous hose and the second distributor is an injection distributor.

该***进一歩包括一个用来将碳酉 «与水分离的设备，一个用于除去碳酸钙中的水的干燥单元，一个用于冷却分离的碳酸钙的冷却单元，和一个制备沉淀碳酉翻勺粉碎单元。附图说明 The system further includes a device for separating carbon 酉 from water, a drying unit for removing water from the calcium carbonate, a cooling unit for cooling the separated calcium carbonate, and a preparation for precipitating carbon Spoon crushing unit. DRAWINGS

图 1为根据本发明的方法沉淀碳酸钙的生产过程的示意图。 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of the production process for precipitating calcium carbonate in accordance with the process of the present invention.

图 2是多相反应体系的略图。 Figure 2 is a schematic of a heterogeneous reaction system.

图 3是本发明中二氧化碳分布***的示意图，其中 10， pH探针； 20,温度 ¾1； 30， C0₂微子 L分布器； 40， C0₂注 ¾ j布器； 50，反应器； 60，反应混合物的排出。 Figure 3 is a schematic diagram of a carbon dioxide distribution system of the present invention, wherein 10, pH probe; 20, temperature 3⁄41; 30, C0 ₂ micro-L distributor; 40, C0 ₂ injection 3⁄4 j cloth; 50, reactor; 60 , the discharge of the reaction mixture.

图 4是水悬浮溶液的温度相对于时间的曲线图。 Figure 4 is a graph of temperature versus time for an aqueous suspension solution.

图 5是水悬浮溶液的 pH相对于时间的曲线图。具体实施方式示意图 1描述了一种新的沉淀碳酉 «的制备过程。商业上任何合适等级的生石灰都可以通过线路 1提供给水悬浮液罐 A，在此它与水反应形成氢氧化钙衆液。该氢氧化钙水衆随后通过线路 2提供给碳艦化罐 B。该碳艦化罐 BFigure 5 is a graph of pH versus time for an aqueous suspension solution. detailed description Scheme 1 describes the preparation of a new precipitated carbonium. Any suitable grade of quicklime can be supplied to the aqueous suspension tank A via line 1, where it reacts with water to form a calcium hydroxide liquid. The calcium hydroxide water is then supplied to the carbonized tank B via line 2. The carbonized tank B

1线路 3从并未显示在示意图中的二氧化碳罐中接收二氧化碳。通过线路 3 提供给罐 B的二氧化碳气流被分作两股具有不同功能的气流。第一气流的主要作用是与氢氧化钙的水悬浮液反应以生成碳酉 «。第二气流提供给碳酸盐化罐 B 用来搅拌该悬浮液。所有参与的物质和多相及界面反应都列于图 2。 Line 1 receives carbon dioxide from a carbon dioxide tank that is not shown in the schematic. The carbon dioxide gas stream supplied to tank B through line 3 is divided into two streams having different functions. The primary function of the first gas stream is to react with an aqueous suspension of calcium hydroxide to form carbon 酉. A second gas stream is supplied to the carbonation tank B for agitating the suspension. All participating substances and multiphase and interfacial reactions are listed in Figure 2.

含有碳酸麪的水悬浮液 1线路 4被输送到一个离心分离*** C，在此碳酉 «与水进行分离。包含按重量计约 30%的水的所得组合物随后通过线路 5被输送到一燥单元 D、通过线路 6到冷却单元 E、逝线路 7到粉碎机。接着粉碎的碳酉线路 8被 ¾¾直接商业应用或其它处理中。 The aqueous suspension containing the carbonated surface 1 line 4 is sent to a centrifugal separation system C where the carbon 酉 «separates from the water. The resulting composition comprising about 30% by weight of water is then conveyed via line 5 to a drying unit D, through line 6 to cooling unit E, and to line 7 to the pulverizer. The pulverized carbon crucible line 8 is then directly commercialized or otherwise processed.

图 3是根据本发明的二氧化碳分布***的示意图。反应器 50包含一个 pH 探针 10和一个传感器 20。这些装置的任一个或两个都可被用于测定图 1 所指的碳酉 t¾化反应罐 B中的反应进程。二氧化碳通过两个不同的分布器被提供到罐 B中。第一气体分布器是一个自密封的或非自密封的二氧化碳微孔分布器 30，它可用于注入必需量的二氧化碳到碳酸盐化罐中以与溶液中存在的氢氧化亍反应。 Figure 3 is a schematic illustration of a carbon dioxide distribution system in accordance with the present invention. Reactor 50 includes a pH probe 10 and a sensor 20. Either or both of these devices can be used to determine the progress of the reaction in the carbon 酉 t3⁄4 reactor B shown in Fig. 1. Carbon dioxide is supplied to tank B through two different distributors. The first gas distributor is a self-sealing or non-self-sealing carbon dioxide micropore distributor 30 which can be used to inject the necessary amount of carbon dioxide into the carbonation tank to react with the hydrazine hydroxide present in the solution.

一股二氧化碳气 « 1二氧化碳注射分布器 40被提供给参照图 1的碳酉 t¾ 化罐 B，并且该二氧化碳提供了一个搅动以搅拌氢氧化麪的水悬浮液。 A carbon dioxide gas « 1 carbon dioxide injection distributor 40 is supplied to the carbon crucible t3⁄4 tank B of Figure 1, and the carbon dioxide provides an agitated water suspension for agitating the hydroxide surface.

进行了实验以支^ ¾里所述的和。一个具有 3.5米高、直径为 0.6米的反应器用于本实验。反应器中的液高为 2.5米。石灰 (CaO)与水的重量比为 1 : 9。氢氧化麪悬浮液的起始温度为 53°C o通过一个液体比重计测定的悬浮液的比重是 10以及通过浊度计测定的浊度为 10。该反应器中总重为 687.5k_g，其中 CaO 占了 68.7kg。二氧化碳来自一个配有蒸发器、调节阀门和流量计的、操作压力可调节为 1至 8巴的 10m³液态二氧化碳罐。 Experiments were carried out to support the sum described in 3⁄4. A reactor having a height of 3.5 meters and a diameter of 0.6 meters was used in this experiment. The liquid level in the reactor was 2.5 meters. The weight ratio of lime (CaO) to water is 1:9. The initial temperature of the hydroxide face suspension was 53 ° C. The specific gravity of the suspension measured by a hydrometer was 10 and the turbidity measured by a turbidimeter was 10. The total weight in the reactor was 687.5 _kg , of which CaO accounted for 68.7 kg. The carbon dioxide comes from a 10m ³ liquid carbon dioxide tank with an evaporator, regulating valve and flow meter that can be adjusted to a pressure of 1 to 8 bar.

在第一实施例中，消耗了总共 68.7kg的 CaO, 计算的二氧化碳的理论用量值为 49.1kg或 27.5Nm³。该二氧化碳通过两种 ¾的气体分布器，即«分布器和注射分布器，加入到反应器中。随着鼓泡二氧化碳的容量在 6巴时为 lNm³/hr/m, 总长为 15米的该二氧化碳微米分布器的二氧化碳分布容量在 6巴时高达 15Nm³/hr。分布碰方煙为三层，每层是一系列圆形的同心环。注射分布器具有 13个孔。每个孔直径为 lmm，注射分布器在 ό巴时总的分布二氧化碳的容量为 30Nm³/hr。 In the first embodiment, a total of 68.7 kg of CaO was consumed, and the theoretical amount of carbon dioxide calculated was 49.1 kg or 27.5 Nm ³ . The carbon dioxide is fed to the reactor through two 3⁄4 gas distributors, the «distributor and the injection distributor. As the volume of bubbling carbon dioxide is 1 Nm ³ /hr/m at 6 bar, the carbon dioxide micro-distributor with a total length of 15 m has a carbon dioxide distribution capacity of up to 15 Nm ³ /hr at 6 bar. The distribution of the touch of smoke is three layers, each layer is a series of circular concentric rings. Injection score The cloth has 13 holes. Each hole has a diameter of 1 mm, and the total volume of carbon dioxide distributed by the injection distributor at the time of the bar is 30 Nm ³ /hr.

在第一实施例中，两种分布器都用于分布二氧化碳和搅拌悬浮液。实验结果示于图 4和图 5。图 4描述了溶液温度随着时间的变化，图 5描述了溶液 pH 随着时间的变化。根据实验，悬浮液的温度在其降低前增加至约 73 °C以及在温度的拐点时反应已接近完成。如图 4所示，悬浮液的温度在其降低前从开始的 53。C逐渐地升高至约 73 V。 In the first embodiment, both types of distributors are used to distribute carbon dioxide and agitate the suspension. The experimental results are shown in Figures 4 and 5. Figure 4 depicts the change in solution temperature over time, and Figure 5 depicts the solution pH as a function of time. According to the experiment, the temperature of the suspension increased to about 73 °C before it decreased, and the reaction was near completion at the inflection point of the temperature. As shown in Figure 4, the temperature of the suspension is 53 from the beginning before it is lowered. C gradually rises to about 73 V.

一种百里酚酞酸-碱 pH计也被用于指示反应是否完成。相对于变化，在反应完成前 pH显示出相反趋势的变化。但是舰了约 73 °C的峰值， pH 的变化呈现出相似的趋势，快速的从 11降至 9.2。反应完成需要 90 中，在此期间，二氧化碳的压力在反应的不同时期从 2巴变化到 6巴，但记录总的二氧化碳消耗量如预算的那样。 A thymol citrate-base pH meter was also used to indicate if the reaction was complete. Relative to the change, the pH shows a change in the opposite trend before the reaction is completed. However, with a peak of about 73 °C, the change in pH showed a similar trend, rapidly dropping from 11 to 9.2. The reaction is completed in 90 years, during which the pressure of carbon dioxide changes from 2 bar to 6 bar at different times of the reaction, but the total carbon dioxide consumption is recorded as budgeted.

由于在反应过程中从 0至 85 中内 Ca(OH)₂在溶液中的溶解，如果排除温度升高对在线测量 pH的影响， 7j相的 pH值是不变的。 Due to the dissolution of Ca(OH) ₂ in the solution from 0 to 85 during the reaction, if the effect of temperature increase on the on-line pH is excluded, the pH of the 7j phase is constant.

实验结果表明二氧化碳的效率高达 55%。据计算当使用 6米长的反应器时该效率可增加至 90%。 The experimental results show that the efficiency of carbon dioxide is as high as 55%. It is calculated that this efficiency can be increased to 90% when using a 6 meter long reactor.

在第二实施例中，只删了±¾的微孔分布器。当 pH指示反应完成时，在反应器底部发现了一层 Ca(OH)_2o 这说明对 Ca(OH)₂溶液的逆向混合效果不好。 In the second embodiment, only the ±3⁄4 micropore distributor is deleted. When the pH indicated the completion of the reaction, a layer of Ca(OH) _{2o was} found at the bottom of the reactor, indicating that the reverse mixing effect on the Ca(OH) ₂ solution was not good.

在第三实施例中，只使用了上述的注射分布器。计算的二氧化碳效率为 45%，低于两种分布器时的效率。 In the third embodiment, only the above-described injection distributor is used. The calculated carbon dioxide efficiency is 45%, which is lower than the efficiency of the two distributors.

由此可以看出，当使用两种二氧化碳供气流时，可获得更有效的反应过程。本发明描述了其中特定的实施方式，但明显的，本发明的许多其他方式和变形对本领域技术人员来说都是显而易见的。本发明附加的权利要求应当理解为覆盖本发明构思和范围之内的所有明显的方式和变形。 It can be seen that when two carbon dioxide gas streams are used for the gas flow, a more efficient reaction process can be obtained. The present invention has been described in terms of specific embodiments thereof, but it is obvious that many other aspects and modifications of the invention will be apparent to those skilled in the art. It is intended that the appended claims be interpreted as

Claims

权利要求书 Claims

氧化的悬浮液中。 In an oxidized suspension.

2.如权利要求 1所述的方法，其特征在于，所述二氧化碳为气态。 2. The method of claim 1 wherein the carbon dioxide is in a gaseous state.

3.如权利要求 1所述的方法，其特征在于，所述二氧化碳的第一流与所述氢氧化应。 3. The method of claim 1 wherein said first stream of carbon dioxide is reacted with said hydroxide.

4.如权利要求 1所述的方法，其特征在于，所述二氧化碳的第二流搅拌所述氢氧化钙的水悬浮液。 4. The method of claim 1 wherein the second stream of carbon dioxide agitates the aqueous suspension of calcium hydroxide.

5.如权利要求 1所述的方法，其特征在于，所悬浮液经历一分离过程以从碳酸麪中分离出水。 The method of claim 1 wherein the suspension undergoes a separation process to separate water from the carbonated surface.

6.如权利要求 1所述的方法，其特征在于，所述碳鹏进行干燥并随后被 7輒 The method according to claim 1, wherein the carbon fiber is dried and then 7 辄

7.如权利要求 1所述的方法，其特征在于，所述干燥并啲碳皮粉碎以回收沉淀的碳酸钙。 The method according to claim 1, wherein the dried and mashed carbon powder is crushed to recover precipitated calcium carbonate.

8.如权利要求 1所述的方法，其特征在于，碳酉 «以氧化麪计与水的重量比为 1 : 1至 1 : 30。 The method according to claim 1, wherein the carbon 酉 «the weight ratio of the oxidation surface to the water is from 1:1 to 1:30.

9.如权利要求 1所述的方法，其特征在于，所述二氧化碳的第一流来自一个微孔胶管或者一组微孔胶管。 9. The method of claim 1 wherein the first stream of carbon dioxide is from a microporous hose or a set of microporous hoses.

10.如权利要求 9所述的方法，其特征在于，所述微孔胶管是自密封的。 10. The method of claim 9 wherein the microporous hose is self-sealing.

11.如权利要求 1所述的方法，其特征在于，所述二氧化碳的第二流来自注射分布器。 11. The method of claim 1 wherein the second stream of carbon dioxide is from an injection distributor.

12如权利要求 1所述的方法，其特征在于，所悬浮液的起始为 20 °〇至60°〇。 The method of claim 1 wherein the suspension is initiated at a temperature of from 20 ° to 60 °.

13.一种制备沉淀碳酉 «的方法，包括： 13. A method of preparing precipitated carbon germanium «, comprising:

a)提供生石一水罐中以形成一水悬浮液； a) providing a raw stone in a water tank to form an aqueous suspension;

b)提供所 ¾7j悬浮液至碳艦化反应器中； f) P所述干燥的碳酉 «固体； b) providing the 3⁄47j suspension to the carbonization reactor; f) P dry carbon 酉 «solid;

粉碎所述冷却且干燥的碳酸麪固体；以及 Crushing the cooled and dried carbonic acid surface solid;

h)回收所述碳鹏。 h) recovering the carbon fiber.

14.如权利要求 13所述的方法，其特征在于，所述二氧化碳气态。 14. The method of claim 13 wherein said carbon dioxide is gaseous.

15.如权利要求 13所述的方法，其特征在于，所述二氧化碳的第一流与所述氢氧化钙反应。 15. The method of claim 13 wherein the first stream of carbon dioxide reacts with the calcium hydroxide.

16.如权利要求 13所述的方法，其特征在于，所述二氧化碳的第二流搅拌所述氢氧化糊水悬浮液。 16. The method of claim 13 wherein the second stream of carbon dioxide agitates the aqueous solution of the aqueous paste.

17.如权利要求 13所述的方法，其特征在于，按重量计所述氧化麪与水的比约为 1 : 1至 1 : 30。 17. The method of claim 13 wherein the ratio of the oxidized surface to water is from about 1 : 1 to about 1: 30 by weight.

18.如权利要求 13所述的方法，其特征在于，所述二氧化碳的第一流来自一个微孔胶管或者一组微孔胶管。 18. The method of claim 13 wherein the first stream of carbon dioxide is from a microporous hose or a set of microporous hoses.

19.如权利要求 13所述的方法，其特征在于，所述二氧化碳的第二流来自注射分布器。 19. The method of claim 13 wherein the second stream of carbon dioxide is from an injection distributor.

20.如权利要求 13所述的方法，其特征在于，所悬浮液的起始为 20°C至 60°C。 20. A method according to claim 13 wherein the suspension is initiated at a temperature of from 20 °C to 60 °C.

21.如权利要求 18所述的方法，其特征在于，所述微孔胶管为自密封的。 21. The method of claim 18, wherein the microporous hose is self-sealing.

22.一种制备沉淀碳酉 «的***，包括一个盛有氢氧化麪 7悬浮液的容器，提供二氧化碳到该容器的第一分布器，以及提供二氧化碳到该容器的第二分布器。 22. A system for preparing precipitated carbonium «, comprising a vessel containing a suspension of hydroxide 7, a first distributor for providing carbon dioxide to the vessel, and a second distributor for providing carbon dioxide to the vessel.

23.如权利要求 22所述的***，其特征在于，所述第一分布器是一个微孔胶管或者一组微孔胶管。 23. The system of claim 22, wherein the first distributor is a microporous hose or a set of microporous hoses.

24.如权利要求 22所述的***，其特征在于，所述微孔胶管是自密封的。 24. The system of claim 22, wherein the microporous hose is self-sealing.

25.如权利要求 22所述的***，其特征在于，所述第二分布器是注射分布器。 25. The system of claim 22, wherein the second distributor is an injection distributor.

26.如权利要求 22所述的***，进一歩包括一个分离单元。 26. The system of claim 22, further comprising a separation unit.

27.如权利要求 22所述的***，进一歩包括一燥单元。 27. The system of claim 22, further comprising a drying unit.

28.如权利要求 22所述的***，进一歩包括一个 P单元。 28. The system of claim 22, further comprising a P unit.

29.如权利要求 22所述的***，进一歩包括一个粉碎单元。 29. The system of claim 22, further comprising a comminution unit.