CN106267879A - The most controlled a kind of acesulfame potassium crystallization apparatus - Google Patents
The most controlled a kind of acesulfame potassium crystallization apparatus Download PDFInfo
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Abstract
本发明公开了一种连续可控的安赛蜜结晶装置，包括：养晶器、第一输送泵、一级结晶器、第二输送泵、二级结晶器、第三输送泵、稠厚器、第四输送泵、晶浆罐，养晶器至少包含一个养晶釜，各个养晶釜出料口分别串联截止阀后与第一输送泵进口连通；一级结晶器包含一级结晶釜、一级冷却器、一级循环泵；第一输送泵出口与一级结晶釜下部循环口连通；二级结晶器包含二级结晶釜、二级冷却器、二级循环泵；一级结晶釜出料口与第二输送泵进口连通，第二输送泵出口与二级结晶釜下部循环口连通，二级结晶釜出料口通过第三输送泵与稠厚器进口连通，稠厚器出口通过第四输送泵与晶浆罐进口连通。上述结晶装置的生产效率高，得到的安塞蜜晶体的质量好且粒度大。
The invention discloses a continuously controllable acesulfame crystallization device, which comprises: a crystal grower, a first conveying pump, a first-stage crystallizer, a second conveying pump, a second-stage crystallizer, a third conveying pump, and a thickener , the fourth conveying pump, the crystal slurry tank, and the crystal grower include at least one crystal grower, and the outlets of each crystal grower are respectively connected in series with the cut-off valve and connected to the inlet of the first conveying pump; the first-stage crystallizer includes a first-stage crystallizer, Primary cooler, primary circulation pump; the outlet of the first conveying pump is connected with the lower circulation port of the primary crystallization kettle; the secondary crystallizer includes the secondary crystallization kettle, secondary cooler, and secondary circulation pump; the outlet of the primary crystallization kettle The feed port is connected with the inlet of the second conveying pump, the outlet of the second conveying pump is connected with the lower circulation port of the secondary crystallization kettle, the outlet of the secondary crystallization kettle is connected with the inlet of the thickener through the third conveying pump, and the outlet of the thickener is connected through the second The four conveying pumps are connected with the inlet of the crystal slurry tank. The production efficiency of the crystallization device is high, and the obtained acesulfame crystals have good quality and large particle size.
Description
技术领域technical field
本发明涉及安赛蜜生产设备领域，具体涉及一种安赛蜜结晶装置。The invention relates to the field of acesulfame production equipment, in particular to an acesulfame crystallization device.
背景技术Background technique
乙酰磺胺酸钾是一种食品甜味添加剂，商品名为安赛蜜。现在安赛蜜的主要结晶方式为单釜冷却结晶，单釜冷却结晶是指：在一个结晶釜中完成安赛蜜的全部结晶过程。单釜冷却结晶的缺点为：（1）由于整个结晶过程均在一个结晶釜中完成，所以只有当结晶釜中的安赛蜜母液结晶完成排出后才能重新加入新的安赛蜜母液进行结晶，固而生产连续性较差，生产效率较低；（2）由于流动性较差，使得釜内晶体易结块，从而需要较快速度的搅拌来防止晶体结块，这样就容易将晶体打破碎，从而就会大大降低安赛蜜晶体的质量和粒度。Acesulfame Potassium is a food sweetener, trade name acesulfame potassium. The main crystallization method of acesulfame potassium is single-pot cooling crystallization. Single-pot cooling crystallization means that the entire crystallization process of acesulfame potassium is completed in one crystallization kettle. The disadvantages of single-pot cooling crystallization are: (1) Since the entire crystallization process is completed in one crystallization tank, only after the crystallization of the acesulfame potassium mother liquor in the crystallization kettle is discharged can new acesulfame potassium mother liquor be re-added for crystallization. solid and poor production continuity, low production efficiency; (2) Due to poor fluidity, the crystals in the kettle are easy to agglomerate, thus requiring faster stirring to prevent crystal agglomeration, so that it is easy to break the crystals , which will greatly reduce the quality and particle size of acesulfame potassium crystals.
发明内容Contents of the invention
本发明所要解决的技术问题是：将提供一种生产效率高、结晶得到的安赛蜜晶体质量好且粒度大的连续可控的安赛蜜结晶装置。The technical problem to be solved by the present invention is to provide a continuously controllable acesulfame potassium crystallization device with high production efficiency, good quality crystallized acesulfame potassium crystals and large particle size.
为了解决上述问题，本发明采用的技术方案为：一种连续可控的安赛蜜结晶装置，其特点是：包括：养晶器、第一输送泵、一级结晶器、第二输送泵、二级结晶器、第三输送泵、稠厚器、第四输送泵、晶浆罐，养晶器至少包含一个养晶釜，各个养晶釜的侧壁上均设置有压缩空气进口，各个养晶釜均通过压缩空气来进行冷却和搅拌，各个养晶釜的出料口分别串联一个截止阀后都与第一输送泵的进口相连通；一级结晶器包含一个带搅拌功能的一级结晶釜、一个一级冷却器、一个一级循环泵，一级结晶釜的上部循环口通过一级循环泵与一级冷却器的进口相连通，一级冷却器的出口与一级结晶釜的下部循环口相连通，一级循环泵能连续抽取一级结晶釜的上层母液送入一级冷却器中进行冷却，冷却后的母液能从一级结晶釜的下部循环口回到一级结晶釜内；第一输送泵的出口与一级结晶釜的下部循环口相连通；二级结晶器包含一个带搅拌功能的二级结晶釜、一个二级冷却器、一个二级循环泵，二级结晶釜的上部循环口通过二级循环泵与二级冷却器的进口相连通，二级冷却器的出口与二级结晶釜的下部循环口相连通，二级循环泵能连续抽取二级结晶釜的上层母液送入二级冷却器中进行冷却，冷却后的母液能从二级结晶釜的下部循环口回到二级结晶釜内；一级结晶釜的出料口与第二输送泵的进口相连通，第二输送泵的出口与二级结晶釜的下部循环口相连通，二级结晶釜的出料口与第三输送泵的进口相连通，第三输送泵的出口与稠厚器的进口相连通，稠厚器的出口与第四输送泵的进口相连通，第四输送泵的出口与晶浆罐的进口相连通。In order to solve the above problems, the technical solution adopted in the present invention is: a continuously controllable acesulfame crystallization device, which is characterized in that it includes: a crystal grower, a first delivery pump, a primary crystallizer, a second delivery pump, The secondary crystallizer, the third conveying pump, the thickener, the fourth conveying pump, the crystal slurry tank, and the crystal grower include at least one crystal grower, and the side walls of each crystal grower are equipped with compressed air inlets, and each grower The crystal kettles are cooled and stirred by compressed air. The outlets of each crystal growing kettle are connected in series with a stop valve and connected to the inlet of the first delivery pump; the primary crystallizer includes a primary crystallizer with stirring function. kettle, a primary cooler, and a primary circulation pump. The upper circulation port of the primary crystallization kettle is connected to the inlet of the primary cooler through the primary circulation pump, and the outlet of the primary cooler is connected to the lower part of the primary crystallization kettle. The circulation port is connected, and the first-stage circulation pump can continuously extract the upper layer mother liquor of the first-stage crystallization kettle and send it to the first-stage cooler for cooling, and the cooled mother liquor can return to the first-stage crystallization kettle from the lower circulation port of the first-stage crystallization kettle ; The outlet of the first conveying pump is connected with the lower circulation port of the primary crystallization tank; the secondary crystallizer includes a secondary crystallization tank with stirring function, a secondary cooler, a secondary circulation pump, and a secondary crystallization tank The upper circulation port is connected with the inlet of the secondary cooler through the secondary circulation pump, and the outlet of the secondary cooler is connected with the lower circulation port of the secondary crystallization kettle, and the secondary circulation pump can continuously extract the upper layer of the secondary crystallization kettle The mother liquor is sent to the secondary cooler for cooling, and the cooled mother liquor can return to the secondary crystallization kettle from the lower circulation port of the secondary crystallization kettle; the discharge port of the first crystallization kettle is connected with the inlet of the second delivery pump , the outlet of the second conveying pump is connected with the lower circulation port of the secondary crystallization kettle, the outlet of the secondary crystallization kettle is connected with the inlet of the third conveying pump, and the outlet of the third conveying pump is connected with the inlet of the thickener The outlet of the thickener is connected with the inlet of the fourth transfer pump, and the outlet of the fourth transfer pump is connected with the inlet of the crystal slurry tank.
进一步的，前述的一种连续可控的安赛蜜结晶装置，其中：养晶器包含四个养晶釜。Further, the aforementioned continuous controllable acesulfame crystallization device, wherein: the crystal grower includes four crystal grow tanks.
进一步的，前述的一种连续可控的安赛蜜结晶装置，其中：一级冷却器和二级冷却器均为列管式冷却器。Further, the aforementioned continuous controllable acesulfame crystallization device, wherein: the primary cooler and the secondary cooler are tube-and-tube coolers.
进一步的，前述的一种连续可控的安赛蜜结晶装置，其中：一级结晶釜具有上部出料口、中部出料口、下部出料口，并且三个出料口分别串联一个截止阀后都与一级出料总管相连通，一级出料总管与第二输送泵的进口相连通；二级结晶釜也具有上部出料口、中部出料口、下部出料口，并且三个出料口分别串联一个截止阀后都与二级出料总管相连通，二级出料总管与第三输送泵的进口相连通。Further, the aforesaid continuously controllable acesulfame crystallization device, wherein: the first-stage crystallization kettle has an upper discharge port, a middle discharge port, and a lower discharge port, and the three discharge ports are respectively connected in series with a stop valve Afterwards, they are all connected with the primary discharge main pipe, and the primary discharge main pipe is connected with the inlet of the second delivery pump; the secondary crystallization kettle also has an upper discharge port, a middle discharge port, and a lower discharge port, and three The outlets are respectively connected in series with a shut-off valve and connected with the secondary discharge main pipe, and the secondary discharge main pipe is connected with the inlet of the third conveying pump.
本发明的优点为：本发明所述的一种连续可控的安赛蜜结晶装置的生产效率高，结晶得到的安塞蜜晶体的质量好且粒度大。The advantages of the present invention are: the continuous and controllable acesulfame crystallization device of the present invention has high production efficiency, and the acesulfame crystals obtained by crystallization have good quality and large particle size.
附图说明Description of drawings
图1为本发明所述的一种连续可控的安赛蜜结晶装置的结构示意图。Fig. 1 is a schematic structural view of a continuous controllable acesulfame crystallization device according to the present invention.
具体实施方式detailed description
下面结合具体实施例和附图对本发明作进一步的详细描述。The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.
如图1所示，一种连续可控的安赛蜜结晶装置，包括：养晶器1、第一输送泵2、一级结晶器3、第二输送泵4、二级结晶器5、第三输送泵6、稠厚器7、第四输送泵8、晶浆罐9，养晶器1包含四个养晶釜11，各个养晶釜11的侧壁上均设置有压缩空气进口，各个养晶釜11均通过压缩空气来进行冷却和搅拌，压缩空气冷却和搅拌能更好的防止晶核破碎，各个养晶釜11的出料口分别串联一个截止阀后都与第一输送泵2的进口相连通；一级结晶器3包含一个带搅拌功能的一级结晶釜31、一个一级冷却器33、一个一级循环泵32，一级结晶釜31的上部循环口通过一级循环泵32与一级冷却器33的进口相连通，一级冷却器33的出口与一级结晶釜31的下部循环口相连通，一级循环泵32能连续抽取一级结晶釜31的上层母液送入一级冷却器33中进行冷却，冷却后的母液能从一级结晶釜31的下部循环口回到一级结晶釜31内，使得一级结晶釜31的上层母液中的细晶再次生长，从而达到减少细晶的目的；第一输送泵2的出口与一级结晶釜31的下部循环口相连通；二级结晶器5包含一个带搅拌功能的二级结晶釜51、一个二级冷却器53、一个二级循环泵52，二级结晶釜51的上部循环口通过二级循环泵52与二级冷却器53的进口相连通，二级冷却器53的出口与二级结晶釜51的下部循环口相连通，二级循环泵52能连续抽取二级结晶釜51的上层母液送入二级冷却器53中进行冷却，冷却后的母液能从二级结晶釜51的下部循环口回到二级结晶釜51内，使得二级结晶釜51的上层母液中的细晶再次生长，从而达到减少细晶的目的；一级结晶釜31的出料口与第二输送泵4的进口相连通，第二输送泵4的出口与二级结晶釜51的下部循环口相连通，二级结晶釜51的出料口与第三输送泵6的进口相连通，第三输送泵6的出口与稠厚器7的进口相连通，稠厚器7的出口与第四输送泵8的进口相连通，第四输送泵8的出口与晶浆罐9的进口相连通。As shown in Figure 1, a continuous controllable acesulfame crystallization device includes: a crystal grower 1, a first delivery pump 2, a primary crystallizer 3, a second delivery pump 4, a secondary crystallizer 5, a second crystallizer Three conveying pumps 6, thickeners 7, fourth conveying pumps 8, crystal slurry tanks 9, the crystal growing device 1 includes four crystal growing kettles 11, and the side walls of each crystal growing kettle 11 are provided with compressed air inlets, each The crystal growth kettles 11 are cooled and stirred by compressed air, which can better prevent the crystal nuclei from breaking. The inlet of the primary crystallizer 3 includes a primary crystallization kettle 31 with stirring function, a primary cooler 33, and a primary circulation pump 32, and the upper circulation port of the primary crystallization kettle 31 passes through the primary circulation pump 32 is connected with the inlet of the primary cooler 33, and the outlet of the primary cooler 33 is connected with the lower circulation port of the primary crystallization kettle 31, and the primary circulating pump 32 can continuously extract the upper layer mother liquor of the primary crystallization kettle 31 into Cooling is carried out in the primary cooler 33, and the mother liquor after cooling can return in the primary crystallization kettle 31 from the lower circulation port of the primary crystallization kettle 31, so that the fine crystals in the upper layer mother liquor of the primary crystallization kettle 31 grow again, thereby To achieve the purpose of reducing fine crystals; the outlet of the first delivery pump 2 is connected to the lower circulation port of the primary crystallization tank 31; the secondary crystallizer 5 includes a secondary crystallization tank 51 with stirring function, a secondary cooler 53 , a secondary circulation pump 52, the upper circulation port of the secondary crystallization kettle 51 is communicated with the inlet of the secondary cooler 53 by the secondary circulation pump 52, and the outlet of the secondary cooler 53 is circulated with the bottom of the secondary crystallization kettle 51 The mouth is connected, and the secondary circulation pump 52 can continuously extract the upper mother liquor of the secondary crystallization kettle 51 and send it to the secondary cooler 53 for cooling, and the cooled mother liquor can return to the secondary stage from the lower circulation port of the secondary crystallization kettle 51. In the crystallization kettle 51, the fine crystals in the upper mother liquor of the secondary crystallization kettle 51 grow again, thereby achieving the purpose of reducing the fine crystals; the discharge port of the primary crystallization kettle 31 is connected with the inlet of the second delivery pump 4, and The outlet of the second conveying pump 4 is connected with the lower circulation port of the secondary crystallization kettle 51, and the discharge port of the secondary crystallization kettle 51 is connected with the inlet of the third conveying pump 6, and the outlet of the third conveying pump 6 is connected with the thickener The inlet of 7 is connected, the outlet of the thickener 7 is connected with the inlet of the fourth delivery pump 8, and the outlet of the fourth delivery pump 8 is connected with the inlet of the crystal slurry tank 9.
在本实施例中，一级冷却器33和二级冷却器53均为列管式冷却器。另外，一级结晶釜31具有上部出料口、中部出料口、下部出料口，并且三个出料口分别串联一个截止阀后都与一级出料总管41相连通，一级出料总管41与第二输送泵4的进口相连通；二级结晶釜51也具有上部出料口、中部出料口、下部出料口，并且三个出料口分别串联一个截止阀后都与二级出料总管61相连通，二级出料总管61与第三输送泵6的进口相连通，一级结晶釜31和二级结晶釜51的出料口这样设置是为了调节出料总管中晶体的数量，因为位置越上的出料口排出母液中的晶体数量越少，从而当下部出料口排出母液中的晶体数量很多时，可以利用上部出料口排出的母液来稀释下部出料口排出的母液，防止晶体过多堵塞出料总管。In this embodiment, both the primary cooler 33 and the secondary cooler 53 are shell and tube coolers. In addition, the first-stage crystallization kettle 31 has an upper discharge port, a middle discharge port, and a lower discharge port, and the three discharge ports are respectively connected in series with a shut-off valve and connected with the primary discharge main pipe 41. The main pipe 41 is connected with the inlet of the second transfer pump 4; the secondary crystallization kettle 51 also has an upper discharge port, a middle discharge port, and a lower discharge port, and the three discharge ports are respectively connected in series with a shut-off valve and connected with the second discharge port. The primary discharge main pipe 61 is connected, and the secondary discharge main pipe 61 is connected with the inlet of the third transfer pump 6. The discharge opening of the primary crystallization kettle 31 and the secondary crystallization kettle 51 is set in this way in order to adjust the crystal in the discharge main pipe. The number of crystals in the mother liquor discharged from the upper outlet is less, so when the number of crystals in the mother liquor discharged from the lower outlet is large, the mother liquor discharged from the upper outlet can be used to dilute the lower outlet. The discharged mother liquor prevents too many crystals from clogging the discharge main pipe.
本实施例所述的一种连续可控的安赛蜜结晶装置的工作原理为：（1）将配置好的安赛蜜母液放置在养晶器1的各个养晶釜11中进行恒速降温，使得安赛蜜母液进入初级成核阶段；（2）打开某个养晶釜11对应的截止阀，第一输送泵2能将该养晶釜11中的安赛蜜母液输送入一级结晶釜31中进行恒速降温，使得安塞蜜母液进入一级结晶阶段，此时一级结晶釜31中的降温速率比养晶釜11中的降温速率快；（3）第二输送泵能将一级结晶釜31中的安赛蜜母液送入二级结晶釜51中进行恒速降温，使得安塞蜜母液进入二级结晶阶段，此时二级结晶釜51中的降温速率比一级结晶釜31中的降温速率快；（4）第三输送泵6能将二级结晶釜51中的安赛蜜母液送入稠厚器7中进行保温，使得安赛蜜母液中的晶体能继续长大，此时为了防止晶体结块，稠厚器在保温的同时会不停搅拌；（5）第四输送泵8能将稠厚器7中的安赛蜜母液送入晶浆罐9中贮存，等待离心干燥，此时为了防止晶体结块，晶浆罐在贮存的同时会不停搅拌。The working principle of a continuous controllable acesulfame crystallization device described in this embodiment is as follows: (1) Place the configured acesulfame mother liquor in each crystal growth kettle 11 of the crystal grower 1 to cool down at a constant speed , so that the acesulfame potassium mother liquor enters the primary nucleation stage; (2) Open the cut-off valve corresponding to a certain crystal growing kettle 11, and the first delivery pump 2 can transport the acesulfame potassium mother liquor in the crystal growing kettle 11 into the primary crystallization stage Constant cooling is carried out in the kettle 31, so that the mother liquor of acesulfame honey enters the primary crystallization stage, and the cooling rate in the primary crystallization kettle 31 is faster than that in the crystal growing kettle 11 at this moment; (3) the second delivery pump can The acesulfame mother liquor in the primary crystallization kettle 31 is sent into the secondary crystallization kettle 51 to carry out constant rate cooling, so that the acesulfame mother liquor enters the secondary crystallization stage, and now the cooling rate in the secondary crystallization kettle 51 is faster than that of the primary crystallization The cooling rate in the kettle 31 is fast; (4) the third delivery pump 6 can send the acesulfame potassium mother liquor in the secondary crystallization kettle 51 into the thickener 7 for insulation, so that the crystals in the acesulfame potassium mother liquor can continue to grow Large, at this time, in order to prevent crystal agglomeration, the thickener will keep stirring while keeping warm; (5) The fourth delivery pump 8 can send the acesulfame potassium mother liquor in the thickener 7 to the crystal slurry tank 9 for storage , waiting for centrifugal drying. At this time, in order to prevent crystal agglomeration, the crystal slurry tank will keep stirring while storing.
本发明的有益效果为：本发明所述的一种连续可控的安赛蜜结晶装置将整个结晶过程依次分为四个阶段，四个阶段分别为：养晶器中进行的初级成核阶段，一级结晶器中进行的一级结晶阶段、二级结晶器中进行的二级结晶阶段、稠厚器中进行的保温稠厚阶段，安赛蜜母液会依次进入四个阶段对应的装置中进行对应阶段的结晶，这样就能实现连续化生产，从而能大大提高生产效率；另外，由于安赛蜜母液会依次流过不同的装置，从而能大大提高安赛蜜母液的流动性，使得母液中的晶体不易结块，从而各个阶段对应的装置的搅拌速度就可以大大降低，这样母液中的晶体就不易破碎，从而能大大提高安赛蜜晶体的质量和粒度。The beneficial effect of the present invention is: a kind of continuous and controllable acesulfame crystallization device described in the present invention divides the whole crystallization process into four stages successively, and the four stages are respectively: the primary nucleation stage carried out in the crystal grower , the primary crystallization stage carried out in the primary crystallizer, the secondary crystallization stage carried out in the secondary crystallizer, and the heat preservation and thickening stage carried out in the thickener, the acesulfame potassium mother liquor will sequentially enter the corresponding devices of the four stages Carry out crystallization at the corresponding stage, so that continuous production can be realized, which can greatly improve production efficiency; in addition, because the mother liquor of acesulfame potassium will flow through different devices in sequence, the fluidity of the mother liquor of acesulfame potassium can be greatly improved, making the mother liquor The crystals in the mother liquor are not easy to agglomerate, so the stirring speed of the corresponding devices at each stage can be greatly reduced, so that the crystals in the mother liquor are not easy to break, thus greatly improving the quality and particle size of acesulfame potassium crystals.
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