WO2020238499A1 - 一种用于制备亚硫酸盐的气液相反应器 - Google Patents

一种用于制备亚硫酸盐的气液相反应器 Download PDF

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WO2020238499A1
WO2020238499A1 PCT/CN2020/086208 CN2020086208W WO2020238499A1 WO 2020238499 A1 WO2020238499 A1 WO 2020238499A1 CN 2020086208 W CN2020086208 W CN 2020086208W WO 2020238499 A1 WO2020238499 A1 WO 2020238499A1
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reactor
gas
liquid phase
reactor tank
liquid
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PCT/CN2020/086208
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English (en)
French (fr)
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徐海涛
徐延忠
陈任远
李明波
刘大华
李军民
吴振山
宋静
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南京杰科丰环保技术装备研究院有限公司
江苏德义通环保科技有限公司
南京硫研环保科技有限公司
南京工业大学
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J10/00—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor
    • B01J10/002—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor carried out in foam, aerosol or bubbles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2455—Stationary reactors without moving elements inside provoking a loop type movement of the reactants
    • B01J19/2465—Stationary reactors without moving elements inside provoking a loop type movement of the reactants externally, i.e. the mixture leaving the vessel and subsequently re-entering it
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
    • B01J4/004—Sparger-type elements
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/62—Methods of preparing sulfites in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
    • B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest

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  • the invention relates to the field of chemical engineering, in particular to a gas-liquid phase reactor for preparing sulfite.
  • Patent CN201220732323.6 discloses a reactor. Through the addition of a gas homogenizer, the gas material coming out of the central tube can be divided into several streams or bubbles, which increases the contact area of the gas material and the liquid material, and makes the gas and liquid more Mix well and react thoroughly.
  • the structure of the reactor is relatively complicated, and the gas homogenizer is prone to damage during use, resulting in inconvenient maintenance and use.
  • Patent CN201010606984.X discloses a gas-liquid phase reactor, which is equipped with a stirrer, which has the advantage of breaking bubbles into smaller bubbles.
  • the disadvantages are high equipment investment, high operating energy consumption and high overall product unit cost; at the same time, the uniformity of bubbling is small and the reaction efficiency is low.
  • Patent CN201720300607.0 discloses a gas-liquid phase reactor, which is equipped with two gas material inlets. When two gas materials participate in the reaction, the setting of the two gas material inlets can make the two gas materials enter separately It is easy to control the flow rate, but it still does not avoid the inherent defects of the internal mixing method.
  • the present invention aims to provide a gas-liquid phase reactor for preparing sulfite in view of the above-mentioned defects.
  • a gas-liquid phase reactor for the preparation of sulfite comprising a reactor tank body, the reactor tank body including a reactor bottom head at the bottom end, a reactor cylinder and a reactor top head ,
  • the bottom of the reactor tank is connected to the stirring liquid reflux port in the middle of the reactor tank through a stirring pump, the gas-phase raw material inlet is located at the top of the reactor tank, and the liquid raw material feed port is located at the upper part of the reactor tank.
  • the discharge port is located at the bottom end of the reactor tank, and a plurality of bubbling tubes are arranged in the reactor tank, and the bubbling tubes are connected with the pipeline of the gas feed inlet.
  • the diameter of the bubble tube is DN150-DN350.
  • the reactor barrel has a cylindrical structure, the inner diameter of the cylinder is generally ⁇ 1.2m ⁇ 4.6m, and the radial height of the cylinder is 2.5m ⁇ 6m.
  • the ratio of the sum of the cross-sectional area of the bubble tube to the cross-sectional area of the corresponding reactor cylinder is 0.1-0.5.
  • the number of bubbling tubes is one, which is fixed on the top head of the reactor by welding or flange connection.
  • the number of bubbling tubes is at least two, which are fixed on the distribution plate by welding or flange connection, and the distribution plate is located at the top of the reactor cylinder.
  • the plurality of bubbling tubes are connected with the gas feed inlet through the gas collecting tube.
  • the present invention has several bubbling tubes inserted into the liquid phase medium to make the gas-liquid contact more uniform and increase the reaction efficiency;
  • the inner and outer walls of the bubbling tube are polished to reduce the rate of wall hanging and wall corrosion, and greatly reduce the frequency of system cleaning;
  • Figure 1 is a schematic diagram of the structure of the present invention.
  • Figure 2 is a schematic diagram of the installation of the bubble tube.
  • Figure 3 is another schematic diagram of the installation of the bubble tube.
  • Figure 4 is another schematic diagram of the structure of the present invention.
  • the gas-liquid phase reactor of the present invention includes a reactor tank 2 and a stirring pump 9.
  • a bubbling tube 1 inside the reactor tank, and the bubbling tube 1 consists of a It is composed of one or more equal-diameter hollow round tubes with a diameter ⁇ DN150.
  • the bubble tube is made of metal, non-metal or composite material.
  • the bottom of the bubble tube 1 is flush, and each bubble tube 1
  • the depth of insertion into the reactor tank 2 is the same, and the inner and outer walls of the bubble tube 1 are polished.
  • the reactor tank 2 of the present invention has a cylindrical structure, the inner diameter of the reactor cylinder 202 is generally ⁇ 1.2m ⁇ 4.6m, and the preferred inner diameter of the reactor cylinder 202 is ⁇ 2.2m ⁇ 2.8m;
  • the radial height of the reactor barrel is 2.5m-6.5m, and the preferred height is 2.8-3.6m;
  • the reactor top head 203 is an elliptical head or a flat-top structure, preferably an elliptical head;
  • the bottom head 201 of the reactor is an elliptical head or a cone structure, preferably a cone structure;
  • the top head 203 of the reactor is provided with a gas-phase feed inlet 5
  • the bottom head 201 of the reactor is provided with a discharge port 11, and the discharge port 11 is located at the bottom of the reactor.
  • the diameter of the discharge port 11 is greater than or equal to DN80
  • the preferred diameter of the discharge port 11 is a round pipe with a diameter of DN100 to DN150.
  • the bubble tube 1 in the reactor tank 2 There are two ways to arrange the bubble tube 1 in the reactor tank 2. One is a bubble tube with only one, and the bubble tube is fixed to the top of the reactor by welding or flange connection. 203, as shown in Figure 2; another form of the bubble tube 1 in the reactor tank 2 is a combined bubble tube 1 with ⁇ 2, each bubble tube 1 is welded or flanged The connection form is fixed on the distribution board 6, as shown in FIG.
  • the upper part of the reactor cylinder 202 is provided with a liquid-phase raw material inlet 3, a cleaning liquid inlet 4, and an air outlet 7.
  • the relative height of the three is the highest in the air outlet 7, and the cleaning liquid inlet is the fourth second, and the liquid phase feed
  • the bottom of the port, the cleaning liquid inlet 4 is 20-50 cm above the level of the liquid phase feed port 3.
  • the gas-liquid phase medium of the present invention can be forced to flow through a stirring pump 9.
  • the inlet and outlet of the stirring pump 9 are connected to the reactor barrel 202, and the stirring liquid outlet 10 is located at the bottom of the reactor barrel 202 At a position of 20-50 cm, the said stirring liquid reflux port 8 is located at a position of 1/2-3/5 of the height of the reactor cylinder 202.
  • the liquid-phase raw material enters the reactor tank 2 from the liquid-phase raw material feed port 3, and stops the liquid feeding after reaching the set liquid level.
  • the gas phase enters the reaction liquid from the bubble tube 1 at the same time. Disperse into bubbles, and the bubbles slowly rise above the liquid level under the action of buoyancy. When the bubbles rise, the solution in the reactor tank will also be strongly disturbed. There is strong mass and heat transfer between the gas and liquid phases, and they gather on the liquid surface The residual gas in the upper part exits the system from the gas outlet 7.
  • the stirring pump 9 can be started for forced disturbance to increase the mass transfer rate of the gas and liquid phases.
  • the combined operation of adding an appropriate cleaning liquid and turning on the stirring pump can be used to melt the crystalline material.
  • the bubbling tube 1 is composed of several round tubes of the same specifications, and each bubbling tube 1 and the gas collecting tube 12 are connected together by welding or flanges. Others are as described in Example 1.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

一种用于制备亚硫酸盐的气液相反应器，包括反应器罐体（2），反应器罐体（2）包括底端的反应器底封头（201）、反应器筒体（202）和反应器顶封头（203），反应器罐体（2）的底部通过搅拌泵（9）与反应器罐体（2）中部的搅拌液回流口（8）相连，气相原料进气口（5）位于反应器罐体（2）的顶端，液体原料进料口（3）位于反应器罐体（2）的上部，排料口（11）位于反应器罐体（2）的底端，且反应器罐体（2）内设有若干鼓泡管（1），鼓泡管（1）与气相原料进气口（5）的管道相连。

Description

一种用于制备亚硫酸盐的气液相反应器 技术领域
本发明涉及化工领域，具体涉及一种用于制备亚硫酸盐的气液相反应器。
背景技术
在化工、环保行业等领域，气液反应往往在反应器/釜中进行。如湿法焦亚硫酸钠、焦亚硫酸钾的生产中，为使提高反应速率，绝大部分的反应釜以内搅拌为主，但是机械搅拌的密封成本高，系统运行能耗大；同时因鼓泡管的气速高，气体物料和液体物料接触面积小，混合不均匀，反应收率低。
专利CN201220732323.6公开了一种反应器，通过增设的气体均布器，能将中心管出来的气体物料分成若干股细流或气泡，增加了气体物料和液体物料的接触面积，使得气液更混合均匀，反应彻底。但是该反应器结构比较复杂，在使用的过程中气体均布器容易发生损坏，造成维修使用不方便。
专利CN201010606984.X公开了一种气液相反应器，反应器内配置有搅拌器，优点是能将气泡破碎成更小的气泡。缺点是设备投资高，运行能耗高，产品单位综合费用高；同时，鼓泡的均匀性小，反应效率低。
专利CN201720300607.0公开了一种气-液相反应器，配置有两个气体物料进口，在有两种气体物料参与反应的情况下，两个气体物料进口的设置可以使得两种气体物料分开进料，便于流量的控制，但其依然没有避开内部搅拌方式固有的缺陷。
发明内容
本发明是针对上述存在的缺陷提供一种用于制备亚硫酸盐的气液相反应器。
本发明的目的可以通过以下技术方案实现：
一种用于制备亚硫酸盐的气液相反应器，该反应器包括反应器罐体，所述的反应器罐体包括底端的反应器底封头，反应器筒体和反应器顶封头，所述反应器罐体的底部通过搅拌泵与反应器罐体中部的搅拌液回流口相连，气相原料进气口位于反应器罐体的顶端，液 体原料进料口位于反应器罐体的上部，排料口位于反应器罐体的底端，且所述的反应器罐体内设有若干鼓泡管，所述的鼓泡管与气体原料进气口的管道相连。
本发明技术方案中：所述的鼓泡管的直径为DN150～DN350。
本发明技术方案中：反应器筒体为圆筒状结构，圆筒内径一般为Φ1.2m～Φ4.6m，圆筒径向高度2.5m～6m。
本发明技术方案中：鼓泡管的横断面积之和与对应反应器筒体的横断截面积的比值为0.1～0.5。
本发明技术方案中：鼓泡管的数量为1个，其通过焊接或法兰连接的形式固定在反应器顶部封头上。
本发明技术方案中：鼓泡管的数量为至少2个，其通过焊接或法兰连接的形式固定在分布板上，所述的分布板位于反应器筒体的顶端。
本发明技术方案中：所述的若干鼓泡管通过集气管与气体原料进气口相连。
本发明的有益效果：
①.本发明有若干根鼓泡管插入液相介质中，使得气液接触更为均匀，增加反应效率；
②.鼓泡管的内外壁通过抛光处理，降低壁面挂料和壁面腐蚀速率，大幅降低系统清洗频次；
③.采用搅拌泵提高气液反应速率，设备检修及系统密封等都易于实现。
④.达到相同目标时，与同类技术相比更加节能。
附图说明
下面结合附图对本发明作进一步说明：
图1是本发明结构示意图。
图2是鼓泡管的安装方式的一种示意图。
图3是鼓泡管的安装方式的另一种示意图。
[根据细则91更正 18.06.2020]　
图4是本发明结构的另一种示意图。
图中：1.鼓泡管；2.反应器罐体；3.液相原料进料口；4.清洗液进口；5.气相原料进气口；6.分布板；7.出气口；8.搅拌液回流口；9搅拌泵；10搅拌液排出口；11.排料口；12.集气管；201反应器底封头；202反应器筒体；203反应器顶封头。
具体实施方式
下面结合实施例对本发明做进一步说明，但本发明的保护范围不限于此：
如图1所示：本发明的气液相反应器，包括反应器罐体2和搅拌泵9，所述的反应器罐体内部有鼓泡管1，所述的鼓泡管1是由一根或一根以上直径≥DN150的等径中空圆管组成，所述的鼓泡管材质为金属材质或非金属材质或复合材质，所述的鼓泡管1底部平齐，每根鼓泡管1插入到反应器罐体2内的深度相同，所述的鼓泡管1内外壁通过抛光处理。
本发明的反应器罐体2为圆筒状结构，所述的反应器筒体202内径一般为Φ1.2m～Φ4.6m，优选的反应器筒体202内径为Φ2.2m～Φ2.8m；反应器筒体径向高度2.5m～6.5m，优选的高度在2.8～3.6m；所述的反应器顶封头203为椭圆形封头或平顶式结构，优选椭圆形封头；所述的反应器底封头201为椭圆形封头或圆锥体结构，优选为圆锥体结构；
进一步，所述的反应器顶封头203上设置有气相原料进气口5，所述的反应器底封头201上设置有排料口11，所述的排料口11位于反应器底封头201的最低点，所述的排料口11管径≥DN80，优选的排料口11管径为DN100～DN150的圆管。
所述的鼓泡管1在反应器罐体2内的布置方式有两种，一种为只有一根的鼓泡管，鼓泡管通过焊接或法兰连接的形式固定在反应器顶部封头203上，如图2所示；所述的鼓泡管1在反应器罐体2内的另一种形式为≥2根的组合型鼓泡管1，各鼓泡管1通过焊接或法兰连接的形式固定在分布板6上，如图3所示。
所述的反应器筒体202上部开设有液相原料进料口3，清洗液进口4以及出气口7，三者的相对高度为出气口7最高，清洗液进口4次之，液相进料口最下，所述的清洗液进口4在液相进料口3水平高度上部20～50cm处。
本发明的气液相介质可通过搅拌泵9实现强制混流，所述的搅拌泵9的进出口均与反应器筒体202的相连，所述的搅拌液排出口10位于反应器筒体202底部20～50cm的位置，所述的搅拌液回流口8位于反应器筒体202的1/2～3/5高度位置处。
说明：在反应的准备阶段，液相原料从液相原料进料口3进入反应器罐体2内，并达到设定液位后停止进液，气相从鼓泡管1进入反应液中，同时分散成气泡，气泡在浮力作用下缓慢上升至液面以上，气泡上升的同时反应器罐体内的溶液也会发生强烈的扰动，气液相间进行强烈的传质与传热，汇集在液面上部的残余气体从出气口7排出系统。
当气相负荷较低或液相浓度太高时，可通过启动搅拌泵9强制扰动，提高气液相的传质速率。
另外，反应器罐体2内出现结晶堵塞或物料严重挂壁等情况时，可通过加入适当清洗液并开启搅拌泵的组合操作，溶化结晶物质。
实施例2：
如图4所示，所述的鼓泡管1由若干支同等规格的圆管组成，各鼓泡管1与集气管12通过焊接或法兰的形式连接在一起。其它如实例1所述。

Claims (7)

  1. 一种用于制备亚硫酸盐的气液相反应器，其特征在于：该反应器包括反应器罐体(2)，所述的反应器罐体(2)包括底端的反应器底封头(201)，反应器筒体(202)和反应器顶封头(203)，所述反应器罐体(2)的底部通过搅拌泵(9)与反应器罐体(2)中部的搅拌液回流口(8)相连，气相原料进气口(5)位于反应器罐体(2)的顶端，液体原料进料口(3)位于反应器罐体(2)的上部，排料口(11)位于反应器罐体(2)的底端，且所述的反应器罐体(2)内设有若干鼓泡管(1)，所述的鼓泡管(1)与气体原料进气口(5)的管道相连。
  2. 根据权利要求1所述的用于制备亚硫酸盐的气液相反应器，其特征在于：所述的鼓泡管(1)的直径为DN150～DN350。
  3. 根据权利要求1所述的用于制备亚硫酸盐的气液相反应器，其特征在于：反应器筒体(202)为圆筒状结构，圆筒内径一般为Φ1.2m～Φ4.6m，圆筒径向高度2.5m～6m。
  4. 根据权利要求1所述的用于制备亚硫酸盐的气液相反应器，其特征在于：鼓泡管(1)的横断面积之和与对应反应器筒体(202)的横断截面积的比值为0.1～0.5。
  5. 根据权利要求1所述的用于制备亚硫酸盐的气液相反应器，其特征在于：鼓泡管(1)的数量为1个，其通过焊接或法兰连接的形式固定在反应器顶部封头(203)上。
  6. 根据权利要求1所述的用于制备亚硫酸盐的气液相反应器，其特征在于：鼓泡管(1)的数量为至少2个，其通过焊接或法兰连接的形式固定在分布板(6)上，所述的分布板(6)位于反应器筒体(202)的顶端。
  7. 根据权利要求1所述的用于制备亚硫酸盐的气液相反应器，其特征在于：所述的若干鼓泡管(1)通过集气管(12)与气体原料进气口(5)相连。
PCT/CN2020/086208 2019-05-30 2020-04-22 一种用于制备亚硫酸盐的气液相反应器 WO2020238499A1 (zh)

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CN110368878A (zh) * 2019-05-30 2019-10-25 南京杰科丰环保技术装备研究院有限公司 一种用于制备亚硫酸盐的气液相反应器

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