CN205925048U - Retrieve batch distillation device of ethanol in china cypress paper production process - Google Patents
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000998 batch distillation Methods 0.000 title abstract description 3
- 241000218691 Cupressaceae Species 0.000 title abstract 2
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 238000010992 reflux Methods 0.000 claims description 42
- 230000001105 regulatory effect Effects 0.000 claims description 23
- 238000009835 boiling Methods 0.000 claims description 3
- 239000007799 cork Substances 0.000 claims 2
- 239000000126 substance Substances 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 24
- 239000007789 gas Substances 0.000 description 17
- 239000002994 raw material Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 238000004821 distillation Methods 0.000 description 5
- 238000007639 printing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Abstract
Description
技术领域technical field
本实用新型涉及一种水松纸生产过程中回收乙醇的间歇精馏装置，属于化工产品提纯设备技术领域。The utility model relates to an intermittent rectification device for recovering ethanol in the production process of tipping paper, belonging to the technical field of chemical product purification equipment.
背景技术Background technique
在水松纸印刷生产工艺中，印刷纸张要大量地使用含有乙醇等有机溶剂的印刷油墨用于溶解树脂和作为流动相，而为了使印染到纸张上的颜色干燥定型，必须对刚印染过的纸张进行烘干，这就不可避免的造成了乙醇等有机溶剂随着温度的升高而挥发，In the production process of tipping paper printing, printing inks containing organic solvents such as ethanol must be used in large quantities to dissolve resins and serve as mobile phases. The paper is dried, which inevitably causes organic solvents such as ethanol to volatilize with the increase of temperature,
使印刷废气中含有大量的乙醇气体。 含乙醇有机废气的直接排放不仅造成资源的巨大浪费，给企业带来沉重的经济负担，更对环境造成了极大地破坏，必须对其进行回收、净化。Make the printing waste gas contain a large amount of ethanol gas. The direct discharge of ethanol-containing organic waste gas not only causes a huge waste of resources, but also brings a heavy economic burden to enterprises, and also causes great damage to the environment, which must be recycled and purified.
目前水松纸厂一般采用如申请号为201110434711.6的中国发明专利所述的一种回收水松纸印刷有机废气中乙醇的方法的流程进行乙醇的回收循环利用：印刷废气收集——过滤、冷却——吸附、冷凝——精馏塔精馏——回用乙醇。但在对回收的乙醇溶液进行精馏塔精馏的步骤中，大多数水松纸厂仍采用传统的填料塔、板式塔等传统的汽液传质设备进行乙醇的精馏。填料塔、板式塔等传统的汽液传质设备虽然广泛地应用于化学及相关工业，但这些设备均由于重力场引力较弱，液膜流动缓慢，气液传质系数较低，导致填料塔、板式塔等传质设备体积庞大、生产强度低，已大大限制了经济效益的提高。At present, tipping paper mills generally adopt a method for recycling ethanol in organic waste gas from tipping paper printing as described in the Chinese invention patent with application number 201110434711.6 to recycle ethanol: collection of printing waste gas—filtering, cooling— - Adsorption, condensation - rectification in rectification tower - reuse of ethanol. However, in the step of rectifying the recovered ethanol solution, most tipping paper mills still use traditional vapor-liquid mass transfer equipment such as traditional packed towers and plate towers to carry out ethanol rectification. Although traditional vapor-liquid mass transfer equipment such as packed towers and plate towers are widely used in chemical and related industries, these devices are weak in the gravitational field, the liquid film flows slowly, and the gas-liquid mass transfer coefficient is low. The bulky volume and low production intensity of mass transfer equipment such as plate towers and plate towers have greatly limited the improvement of economic benefits.
利用超重力技术进行乙醇溶液的脱水是一种新型的分离技术，该技术依托超重力精馏塔进行，其原理是：液体在超重力和巨大剪切力的作用下被拉伸成膜成丝成滴 ，产生出巨大的相间接触面积，使气液接触面积提高几个数量级，从而达到气液传质效率大幅度提高的目的。该方法相较于传统的精馏方法有更精细、更安全、更高效的特点，节能效果显著，更能适应环境和企业要求。The dehydration of ethanol solution using high gravity technology is a new type of separation technology, which relies on high gravity rectification towers. The principle is: the liquid is stretched into a film and filament under the action of high gravity and huge shear force Droplets generate a huge interphase contact area, which increases the gas-liquid contact area by several orders of magnitude, thereby achieving the purpose of greatly improving the gas-liquid mass transfer efficiency. Compared with the traditional distillation method, this method has the characteristics of finer, safer and more efficient, has remarkable energy-saving effect, and is more adaptable to the requirements of the environment and enterprises.
发明内容Contents of the invention
本实用新型所要解决的技术问题是现有水松纸生产过程中回收乙醇的精馏技术中能耗高、精馏装置过于庞大的问题，提供一种水松纸生产过程中回收乙醇的间歇精馏装置，本实用新型通过以下技术方案实现。The technical problem to be solved by the utility model is the problem of high energy consumption and too large rectification device in the rectification technology for recovering ethanol in the existing tipping paper production process. Distillation device, the utility model is realized through the following technical solutions.
一种水松纸生产过程中回收乙醇的间歇精馏装置，包括原料罐1、再沸器3、超重力精馏塔4、第一冷凝器6、气液分离器7、第二冷凝器8、回流中间罐9、回流泵10、产品冷却器13、产品收集器14和调节阀，原料罐1通过调节阀连接再沸器3，再沸器3与超重力精馏塔4底部的气体入口连接，超重力精馏塔4底部的液体出口连接再沸器3，超重力精馏塔4顶部的轻组分气体出口依次与第一冷凝器6、气液分离器7连接，气液分离器7的气体出口连接第二冷凝器8后进入回流中间罐9，气液分离器7液体出口连接回流中间罐9，回流中间罐9依次通过回流泵10、调节阀连接超重力精馏塔4顶部的液体入口，回流中间罐9还依次通过回流泵10、调节阀、产品冷却器13连接产品收集器14。A batch rectification device for recovering ethanol in the production process of tipping paper, comprising a raw material tank 1, a reboiler 3, a high-gravity rectification tower 4, a first condenser 6, a gas-liquid separator 7, and a second condenser 8 , reflux intermediate tank 9, reflux pump 10, product cooler 13, product collector 14 and regulating valve, raw material tank 1 connects reboiler 3 through regulating valve, reboiler 3 and the gas inlet at the bottom of supergravity rectifying tower 4 Connect, the liquid outlet at the bottom of the high-gravity rectification tower 4 is connected to the reboiler 3, and the light component gas outlet at the top of the high-gravity rectification tower 4 is connected with the first condenser 6 and the gas-liquid separator 7 successively, and the gas-liquid separator The gas outlet of 7 is connected to the second condenser 8 and then enters the reflux intermediate tank 9, the liquid outlet of the gas-liquid separator 7 is connected to the reflux intermediate tank 9, and the reflux intermediate tank 9 is connected to the top of the supergravity rectification tower 4 through the reflux pump 10 and the regulating valve in turn The liquid inlet of the reflux intermediate tank 9 is also connected to the product collector 14 through the reflux pump 10, the regulating valve, and the product cooler 13 in sequence.
所述超重力精馏塔4设有精馏塔塔顶温度显示仪表5。The high-gravity rectification tower 4 is provided with a rectification tower top temperature display instrument 5 .
上述再沸器3采用蒸汽或油浴加热。The above-mentioned reboiler 3 is heated by steam or oil bath.
上述超重力精馏塔4转子转速为400～1200r/min，填料孔隙率为85％～95％，比表面积为3000m2/m3～5000m2/m3。The rotor speed of the above-mentioned high-gravity rectification tower 4 is 400-1200r/min, the porosity of the filler is 85%-95%, and the specific surface area is 3000m 2 /m 3 -5000m 2 /m 3 .
该水松纸生产过程中回收乙醇的间歇精馏装置的工作原理为：原料在再沸器中加热至沸点，回流罐中的半成品回流至超重力精馏塔，气液两相在超重力精馏塔内经过不断的循环逆流接触，最终得到纯度在95%以上的乙醇产品；具体流程为：The working principle of the intermittent rectification device for recovering ethanol in the tipping paper production process is: the raw material is heated to boiling point in the reboiler, the semi-finished product in the reflux tank is refluxed to the high-gravity rectification tower, and the gas-liquid two-phase is in the high-gravity distillation column. After continuous circulation and countercurrent contact in the distillation tower, the ethanol product with a purity of more than 95% is finally obtained; the specific process is as follows:
（1）原料从原料罐1进入再沸器3，气化后进入超重力精馏塔4，经超重力精馏塔4作用后，塔顶得到的轻组分气体经第一冷凝器6和第二冷凝器8进行两级冷凝，冷凝液流入回流中间罐9。(1) The raw material enters the reboiler 3 from the raw material tank 1, enters the high-gravity rectification tower 4 after gasification, and after the action of the high-gravity rectification tower 4, the light component gas obtained at the top of the tower passes through the first condenser 6 and The second condenser 8 performs two-stage condensation, and the condensate flows into the reflux intermediate tank 9 .
（2）回流中间罐9中冷凝液经回流泵10以适当回流量（调节调节阀Ⅱ11控制流量）从顶部进入超重力精馏塔4，在超重力精馏塔4内进行气液两相传热作用。(2) The condensate in the reflux intermediate tank 9 enters the high-gravity rectification tower 4 from the top through the reflux pump 10 with an appropriate reflux flow rate (adjusting the flow rate by regulating valve II11), and conducts gas-liquid two-phase heat transfer in the high-gravity rectification tower 4 effect.
（3）随着流程（2）的不断循环，超重力精馏塔4顶得到的轻组分气体中乙醇含量不断提高，当塔顶温度降低至乙醇沸点温度时，将冷凝液的一部分（打开调节阀Ⅲ12并控制流量）经产品冷却器13收集于产品收集器14中，一部分继续回流至超重力精馏塔4。(3) With the continuous circulation of the process (2), the ethanol content in the light component gas obtained from the top of the high-gravity rectification tower 4 continues to increase. When the temperature at the top of the tower drops to the boiling point of ethanol, a part of the condensate (open Regulating valve III12 and controlling the flow rate) is collected in the product collector 14 through the product cooler 13, and part of it continues to flow back to the high-gravity rectification column 4.
（4）当乙醇产品收集接近尾声时，适当增大冷凝液回流比，当超重力精馏塔4顶温度逐渐升高时停止收集乙醇产品。(4) When the collection of ethanol products is coming to an end, appropriately increase the reflux ratio of the condensate, and stop collecting ethanol products when the temperature at the top 4 of the high-gravity distillation tower gradually rises.
（5）检测再沸器3中精馏残液的乙醇浓度，达标后即可打开再沸器废液排出口排尽精馏残液，向再沸器装入新一批的乙醇溶液，进行下批间歇精馏。(5) Detect the ethanol concentration of the rectification raffinate in the reboiler 3. After reaching the standard, the waste liquid outlet of the reboiler can be opened to drain the rectification raffinate, and a new batch of ethanol solution is loaded into the reboiler to carry out The next batch of batch distillation.
本实用新型的有益效果是：本申请采用超重力精馏塔进行乙醇的提纯，利用超重力场和高比表面积的丝网填料极大地提高了气液传质效率，该装置相较于传统的精馏装置有更精细、更安全、更高效，具有设备占地面积小、投资少、热利用率高、操作过程灵活易于控制等特点，节能效果显著，更能适应环境和企业要求。The beneficial effects of the utility model are: the application uses a supergravity rectification tower to purify ethanol, and the gas-liquid mass transfer efficiency is greatly improved by using the supergravity field and the wire mesh packing with a high specific surface area. Compared with the traditional The rectification device is more refined, safer, and more efficient. It has the characteristics of small equipment footprint, low investment, high heat utilization rate, flexible and easy-to-control operation process, remarkable energy-saving effect, and better adaptability to the environment and enterprise requirements.
附图说明Description of drawings
图1是本实用新型结构示意图。Fig. 1 is the structural representation of the utility model.
图中：1-原料罐，2-调节阀Ⅰ，3-再沸器，4-超重力精馏塔，5-精馏塔塔顶温度显示仪表，6-第一冷凝器，7-气液分离器，8-第二冷凝器，9-回流中间罐，10-回流泵，11-调节阀Ⅱ，12-调节阀Ⅲ，13-产品冷却器，14-产品收集器。In the figure: 1-raw material tank, 2-regulating valve Ⅰ, 3-reboiler, 4-high gravity rectification tower, 5-rectification tower top temperature display instrument, 6-first condenser, 7-gas-liquid Separator, 8-second condenser, 9-reflux intermediate tank, 10-reflux pump, 11-regulating valve II, 12-regulating valve III, 13-product cooler, 14-product collector.
具体实施方式detailed description
下面结合附图和具体实施方式，对本实用新型作进一步说明。Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.
实施例1Example 1
如图1所示，该水松纸生产过程中回收乙醇的间歇精馏装置，包括原料罐1、再沸器3、超重力精馏塔4、第一冷凝器6、气液分离器7、第二冷凝器8、回流中间罐9、回流泵10、产品冷却器13、产品收集器14和调节阀（调节阀Ⅰ2、调节阀Ⅱ11和调节阀Ⅲ12），原料罐1通过调节阀连接再沸器3，再沸器3与超重力精馏塔4底部的气体入口连接，超重力精馏塔4底部的液体出口连接再沸器3，超重力精馏塔4顶部的轻组分气体出口依次与第一冷凝器6、气液分离器7连接，气液分离器7的气体出口连接第二冷凝器8后进入回流中间罐9，气液分离器7液体出口连接回流中间罐9，回流中间罐9依次通过回流泵10、调节阀连接超重力精馏塔4顶部的液体入口，回流中间罐9还依次通过回流泵10、调节阀、产品冷却器13连接产品收集器14。As shown in Figure 1, the intermittent rectification device for recovering ethanol in the tipping paper production process includes a raw material tank 1, a reboiler 3, a high-gravity rectification tower 4, a first condenser 6, a gas-liquid separator 7, The second condenser 8, the reflux intermediate tank 9, the reflux pump 10, the product cooler 13, the product collector 14 and regulating valves (regulating valve I2, regulating valve II11 and regulating valve III12), the raw material tank 1 is connected to reboil through the regulating valve 3, the reboiler 3 is connected with the gas inlet at the bottom of the high-gravity rectification tower 4, the liquid outlet at the bottom of the high-gravity rectification tower 4 is connected with the reboiler 3, and the light component gas outlet at the top of the high-gravity rectification tower 4 is sequentially It is connected with the first condenser 6 and the gas-liquid separator 7. The gas outlet of the gas-liquid separator 7 is connected to the second condenser 8 and enters the reflux intermediate tank 9. The liquid outlet of the gas-liquid separator 7 is connected to the reflux intermediate tank 9. The tank 9 is connected to the liquid inlet at the top of the high-gravity rectification tower 4 through the reflux pump 10 and the regulating valve in turn, and the reflux intermediate tank 9 is also connected to the product collector 14 through the reflux pump 10, the regulating valve and the product cooler 13 in sequence.
实施例2Example 2
如图1所示，该水松纸生产过程中回收乙醇的间歇精馏装置，包括原料罐1、再沸器3、超重力精馏塔4、第一冷凝器6、气液分离器7、第二冷凝器8、回流中间罐9、回流泵10、产品冷却器13、产品收集器14和调节阀，原料罐1通过调节阀连接再沸器3，再沸器3与超重力精馏塔4底部的气体入口连接，超重力精馏塔4底部的液体出口连接再沸器3，超重力精馏塔4顶部的轻组分气体出口依次与第一冷凝器6、气液分离器7连接，气液分离器7的气体出口连接第二冷凝器8后进入回流中间罐9，气液分离器7液体出口连接回流中间罐9，回流中间罐9依次通过回流泵10、调节阀连接超重力精馏塔4顶部的液体入口，回流中间罐9还依次通过回流泵10、调节阀、产品冷却器13连接产品收集器14。As shown in Figure 1, the intermittent rectification device for recovering ethanol in the tipping paper production process includes a raw material tank 1, a reboiler 3, a high-gravity rectification tower 4, a first condenser 6, a gas-liquid separator 7, Second condenser 8, reflux intermediate tank 9, reflux pump 10, product cooler 13, product collector 14 and regulating valve, raw material tank 1 is connected to reboiler 3 through regulating valve, reboiler 3 and high gravity rectification tower The gas inlet at the bottom of 4 is connected, the liquid outlet at the bottom of the supergravity rectification tower 4 is connected to the reboiler 3, and the light component gas outlet at the top of the supergravity rectification tower 4 is connected with the first condenser 6 and the gas-liquid separator 7 in turn , the gas outlet of the gas-liquid separator 7 is connected to the second condenser 8 and then enters the reflux intermediate tank 9, the liquid outlet of the gas-liquid separator 7 is connected to the reflux intermediate tank 9, and the reflux intermediate tank 9 is connected to the supergravity through the reflux pump 10 and the regulating valve in turn The liquid inlet at the top of the rectification tower 4 and the reflux intermediate tank 9 are also connected to the product collector 14 through the reflux pump 10 , the regulating valve, and the product cooler 13 in sequence.
该超重力精馏塔4设有精馏塔塔顶温度显示仪表5；再沸器3采用蒸汽加热；超重力精馏塔4转子转速为400～1200r/min，填料孔隙率为85％～95％，比表面积为3000m2/m3～5000m2/m3。The high-gravity rectification tower 4 is provided with a rectification tower top temperature display instrument 5; the reboiler 3 is heated by steam; %, the specific surface area is 3000m 2 /m 3 to 5000m 2 /m 3 .
实施例3Example 3
如图1所示，该水松纸生产过程中回收乙醇的间歇精馏装置，包括原料罐1、再沸器3、超重力精馏塔4、第一冷凝器6、气液分离器7、第二冷凝器8、回流中间罐9、回流泵10、产品冷却器13、产品收集器14和调节阀，原料罐1通过调节阀连接再沸器3，再沸器3与超重力精馏塔4底部的气体入口连接，超重力精馏塔4底部的液体出口连接再沸器3，超重力精馏塔4顶部的轻组分气体出口依次与第一冷凝器6、气液分离器7连接，气液分离器7的气体出口连接第二冷凝器8后进入回流中间罐9，气液分离器7液体出口连接回流中间罐9，回流中间罐9依次通过回流泵10、调节阀连接超重力精馏塔4顶部的液体入口，回流中间罐9还依次通过回流泵10、调节阀、产品冷却器13连接产品收集器14。As shown in Figure 1, the intermittent rectification device for recovering ethanol in the tipping paper production process includes a raw material tank 1, a reboiler 3, a high-gravity rectification tower 4, a first condenser 6, a gas-liquid separator 7, Second condenser 8, reflux intermediate tank 9, reflux pump 10, product cooler 13, product collector 14 and regulating valve, raw material tank 1 is connected to reboiler 3 through regulating valve, reboiler 3 and high gravity rectification tower The gas inlet at the bottom of 4 is connected, the liquid outlet at the bottom of the supergravity rectification tower 4 is connected to the reboiler 3, and the light component gas outlet at the top of the supergravity rectification tower 4 is connected with the first condenser 6 and the gas-liquid separator 7 in turn , the gas outlet of the gas-liquid separator 7 is connected to the second condenser 8 and then enters the reflux intermediate tank 9, the liquid outlet of the gas-liquid separator 7 is connected to the reflux intermediate tank 9, and the reflux intermediate tank 9 is connected to the supergravity through the reflux pump 10 and the regulating valve in turn The liquid inlet at the top of the rectification tower 4 and the reflux intermediate tank 9 are also connected to the product collector 14 through the reflux pump 10 , the regulating valve, and the product cooler 13 in sequence.
该超重力精馏塔4设有精馏塔塔顶温度显示仪表5；再沸器3采用油浴加热；超重力精馏塔4转子转速为400～1200r/min，填料孔隙率为85％～95％，比表面积为3000m2/m3～5000m2/m3。The high-gravity rectification tower 4 is provided with a rectification tower top temperature display instrument 5; the reboiler 3 is heated by an oil bath; 95%, and the specific surface area is 3000m 2 /m 3 to 5000m 2 /m 3 .
以上结合附图对本实用新型的具体实施方式作了详细说明，但是本实用新型并不限于上述实施方式，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本实用新型宗旨的前提下作出各种变化。The specific implementation of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned implementation. Various changes are made.
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| CN107362563A (en) * | 2017-08-22 | 2017-11-21 | 南通泰利达化工有限公司 | The ethanol distillation technique and device of a kind of nitrocotton |
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| CN112791434A (en) * | 2020-08-18 | 2021-05-14 | 北京沃尔福环保科技有限公司 | A kind of supergravity distillation device |
| CN113788457A (en) * | 2021-10-25 | 2021-12-14 | 江苏三美化工有限公司 | Method for separating hydrogen chloride in R134a by using supergravity dry method |
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