WO2019228320A1 - Method and device suitable for purification of reforming hydrogen - Google Patents

Method and device suitable for purification of reforming hydrogen Download PDF

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WO2019228320A1
WO2019228320A1 PCT/CN2019/088708 CN2019088708W WO2019228320A1 WO 2019228320 A1 WO2019228320 A1 WO 2019228320A1 CN 2019088708 W CN2019088708 W CN 2019088708W WO 2019228320 A1 WO2019228320 A1 WO 2019228320A1
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gas
liquid
throat
stage
venturi scrubber
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PCT/CN2019/088708
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French (fr)
Chinese (zh)
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杨强
钱运东
黄燎云
李冰冰
张毅文
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上海米素环保科技有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/52—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with liquids; Regeneration of used liquids

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  • the invention relates to the technical field of gas purification, in particular to a method and a device suitable for the purification of reformed hydrogen.
  • Hydrogen chloride (HCl) gas is a colorless gas with a strong pungent odor.
  • One volume of water can dissolve about 400 volumes of HCl gas.
  • water is often used to directly absorb hydrogen chloride gas, but direct absorption is prone to desorption, and the absorbed water becomes acidic, which is not conducive to subsequent processing.
  • Patent: CN206334508 discloses a spraying tower for hydrogen chloride absorption process, which adopts two-stage spraying to improve hydrogen chloride absorption efficiency.
  • the equipment has a large volume, a complex structure, and a relatively long processing time.
  • Patent: CN205127685 A hydrogen chloride tail gas purification device, including a reaction kettle, has a large volume and a complicated structure;
  • the present invention provides a method and a device suitable for reforming hydrogen purification.
  • the technical scheme adopted by the present invention is to adopt a multi-stage Venturi structure in series to maximize the impurity gas in the reformed hydrogen gas to be absorbed by the washing liquid to the maximum; by using a multi-stage gas-liquid separation module, the washed hydrogen can be reformed Deep deliquoring is performed to prevent the washing liquid from being entrained in the reformed hydrogen after purification.
  • the present invention provides a solution suitable for reforming hydrogen purification treatment.
  • the specific technical solution is as follows:
  • a method suitable for reforming hydrogen purification treatment includes the following steps:
  • the large water droplets in the reformed hydrogen stream are extracted through the inertial separation distributor.
  • the washing liquid that has absorbed the hydrogen chloride gas during the washing process is separated into the tank volume liquid zone, and the small water droplets entrained in the air stream are separated by the combined high-efficiency blade
  • the separator and the nano-mixed gas-liquid separator perform deep separation.
  • the separated liquid phase passes through gravity and a drainage tube to the bottom liquid accumulation area, and the purified gas phase is discharged from the top.
  • This design scheme combines gas absorption and efficient gas-liquid separation.
  • the equipment is simple and efficient, and at the same time, it can reduce water consumption.
  • the multi-stage Venturi scrubber series structure is adopted to achieve deep purification of reformed hydrogen and reduce the amount of washing liquid;
  • FIG. 1 is a process position and a flowchart of a reforming hydrogen purification device.
  • FIG. 2 is a schematic structural view of a device in the form of a venturi scrubber in Embodiment 1;
  • Figure 3 is a schematic diagram of the structure of a single-stage Venturi scrubber and separator.
  • First-level Venturi inlet 1 First-level Venturi inlet 1, first-level Venturi injection nozzle 2, first-level Venturi throat 3, second-level Venturi inlet 4, second-level Venturi injection nozzle 5, second-level Venturi throat 6, washer Connection flange 7 to separator, replenishment inlet 8, skirt 9, drain outlet 10, level gauge interface 11, level gauge interface 12, inertial separation distributor 13, air distribution plate 14, pressure difference meter Interface 15, gas-liquid efficient internals 16, pressure differential gauge interface 17, separator outlet 18, reformed hydrogen 19, make-up liquid 20, differential pressure gauge 21, level gauge 22, circulation pump 23, external drainage 24, aromatic hydrocarbon Extraction device 25, PSA device 26, and hydrogenation device 27.
  • a plant needs to treat reformed hydrogen to remove the chloride ions contained in the gas.
  • the specific working conditions are as follows:
  • FIG. 1 is a process position and a flowchart of a reforming hydrogen purification device.
  • FIG. 2 is a schematic structural diagram of a device in the form of a Venturi scrubber in Embodiment 1; and
  • FIG. 3 is a schematic structural diagram of a single-stage Venturi scrubber and separator.
  • the reformed hydrogen After the reformed hydrogen enters from the inlet of the first-stage Venturi wet scrubber, it is decompressed and accelerated to 50m / s.
  • the high-speed gas atomizes the washing liquid (water) injected into the throat, and the gas-liquid contact area increases sharply.
  • the hydrogen chloride gas is quickly absorbed by the washing liquid, and the gradual expansion section provided behind the throat gradually restores the gas pressure; as the pressure increases, the solubility of the hydrogen chloride gas in water increases, and the washing liquid further absorbs the hydrogen chloride gas.
  • the reformed hydrogen After the gas absorption is completed, the reformed hydrogen enters the secondary Venturi scrubber after washing, and the gas is subjected to the same washing process in the secondary Venturi shrinking section, throat section and gradual expanding section, and the impurity gas is fully absorbed.
  • the large droplets in the hydrogen flow are extracted through the inertial separation distributor.
  • the washing liquid droplets that have absorbed the impurity gas during the washing process are separated into the tank volume liquid zone.
  • the small droplets entrained in the air stream pass through the combined high-efficiency blade separator.
  • the nano-mixed gas-liquid separator is used for deep separation.
  • the separated liquid phase passes the gravity and the drainage tube to the bottom liquid accumulation area, and the purified gas phase is discharged from the top.
  • This design scheme combines gas absorption and gas-liquid efficient separation, and the final purification efficiency is stable at more than 90%.
  • the equipment is simple and efficient, and it can reduce water consumption.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
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  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
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Abstract

Provided are a method and device suitable for the purification of reforming hydrogen. The device comprises a scrubber and a gas-liquid separator, wherein the scrubber comprises a multi-stage venturi scrubber, with each stage of venturi scrubber being composed of a gas inlet, a tapered section, a throat section, a divergent section, a gas outlet, a wash liquid inlet, a nozzle etc.; and the gas-liquid separator is composed of a multi-stage gas-liquid separation module and a separator housing. The reforming hydrogen is first passed through the venturi scrubber to wash off and remove impurity gases, and then passed through the multi-stage gas-liquid separation module to remove a washing liquid, whereby the content of harmful impurity gases can be greatly reduced, thereby realizing the purification of the reforming hydrogen.

Description

一种适用于重整氢气净化的方法和装置Method and device suitable for reforming hydrogen purification 技术领域Technical field
本发明涉及气体净化技术领域，特别涉及一种适用于重整氢气净化的方法和装置。The invention relates to the technical field of gas purification, in particular to a method and a device suitable for the purification of reformed hydrogen.
背景技术Background technique
在连续重整在工艺操作中需要根据系统中的水－氯平衡状况注氯以及在催化剂再生后进行氯化等措施来维持催化剂上的氯含量，其中流失的氯元素多会以氯化氢的形式存在于重整氢气中。近年来使用重整氢的装置先后多次发生氯腐蚀事故，致使换热器穿孔系统被NH 4Cl堵塞、炉管结焦等使装置停工的事故案例时有发生，因而必须对重整氢气进行脱氯处理。 During continuous reforming, it is necessary to inject chlorine according to the water-chlorine balance in the system and perform chlorination after catalyst regeneration to maintain the chlorine content on the catalyst. Most of the lost chlorine elements will be in the form of hydrogen chloride. In reforming hydrogen. In recent years, the use of reformed hydrogen has repeatedly suffered from chlorine corrosion accidents, which caused the heat exchanger perforation system to be blocked by NH 4 Cl, furnace tube coking, and other accidents that caused the equipment to stop working. Therefore, the reformed hydrogen must be removed Chlorine treatment.
氯化氢(HCl)气体是一种无色且有强烈刺激性气味的气体，1体积的水可溶解大约400体积的HCl气体。基于氯化氢易溶于水的原理，常常采用水直接吸收氯化氢气体，但直接吸收易发生解吸，而且吸收后的水成酸性，不利于后续处理。Hydrogen chloride (HCl) gas is a colorless gas with a strong pungent odor. One volume of water can dissolve about 400 volumes of HCl gas. Based on the principle that hydrogen chloride is easily soluble in water, water is often used to directly absorb hydrogen chloride gas, but direct absorption is prone to desorption, and the absorbed water becomes acidic, which is not conducive to subsequent processing.
专利：CN 206334508 U公开了一种氯化氢吸收工艺的喷淋塔，采用两级喷淋的形式以提高氯化氢吸收效率，设备体积较大、结构复杂、处理时间相对较长；专利：CN 205127685 U公开了一种氯化氢尾气净化装置，包括反应釜，该装置体积大、结构复杂；Patent: CN206334508 discloses a spraying tower for hydrogen chloride absorption process, which adopts two-stage spraying to improve hydrogen chloride absorption efficiency. The equipment has a large volume, a complex structure, and a relatively long processing time. Patent: CN205127685 A hydrogen chloride tail gas purification device, including a reaction kettle, has a large volume and a complicated structure;
因此，需要采用结构简单、处理效率高、处理成本低的气体处理方法对现有技术进行改进。Therefore, it is necessary to adopt a gas processing method with a simple structure, high processing efficiency, and low processing cost to improve the existing technology.
发明内容Summary of the Invention
为克服上述现有技术的不足，本发明提供一种适用于重整氢气净化的方法和装置。In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a method and a device suitable for reforming hydrogen purification.
本发明所采用的技术方案是，采用多级文丘里通过串联的结构，使重整氢气中的杂质气体最大限度被洗涤液吸收；通过采用多级气液分离模块，能够对洗后重整氢气进行深度脱液，以防止净化后重整氢气中夹带洗涤液。The technical scheme adopted by the present invention is to adopt a multi-stage Venturi structure in series to maximize the impurity gas in the reformed hydrogen gas to be absorbed by the washing liquid to the maximum; by using a multi-stage gas-liquid separation module, the washed hydrogen can be reformed Deep deliquoring is performed to prevent the washing liquid from being entrained in the reformed hydrogen after purification.
为了实现上述目的，本发明提供了一种适用于重整氢气净化处理的方案，具 体的技术方案如下：In order to achieve the above objective, the present invention provides a solution suitable for reforming hydrogen purification treatment. The specific technical solution is as follows:
一种适用于重整氢气净化处理的方法，包括以下步骤：A method suitable for reforming hydrogen purification treatment includes the following steps:
(1)重整氢气体由一级文丘里湿式洗涤器入口进入后，先减压加速至40～60m/s，高速气体将喉部注入的洗涤液(水)雾化，气液接触面积急剧增大；(1) After the reformed hydrogen gas enters from the inlet of the first-class Venturi wet scrubber, it is decompressed and accelerated to 40-60 m / s. The high-speed gas atomizes the washing liquid (water) injected into the throat, and the gas-liquid contact area is sharp Increase
(2)随后气流中氯化氢气体快速洗涤液吸收，在喉部之后设置的渐扩段使气体压力逐渐恢复；随着压力的升高，氯化氢气体在水中的溶解度加大，洗涤液进一步吸收氯化氢气体。(2) The hydrogen chloride gas is quickly absorbed by the washing liquid in the air stream, and the gradually expanding section behind the throat gradually restores the gas pressure; as the pressure increases, the solubility of the hydrogen chloride gas in water increases, and the washing liquid further absorbs the hydrogen chloride gas. .
(3)完成氯化氢气体吸收后，重整氢气体进入二级文丘里洗涤器，在二级文丘里渐缩段、喉管段以及渐扩段进行相同的洗涤过程，以增加停留时间和进一步提高洗涤效果。(3) After the absorption of hydrogen chloride gas is completed, the reformed hydrogen gas enters the secondary venturi scrubber, and the same washing process is performed in the secondary venturi shrinking section, throat section and expanding section to increase the residence time and further improve the washing. effect.
(4)通过惯性分离分布器对重整氢气流中的大水滴进行脱出，洗涤过程中吸收了氯化氢气体的洗涤液被分离到罐体积液区，气流中夹带的小水滴通过组合高效叶片分离器和纳米混编气液分离器进行深度分离，分离后的液相通过重力和引流管到底部积液区，净化后的气相由顶部排出。(4) The large water droplets in the reformed hydrogen stream are extracted through the inertial separation distributor. The washing liquid that has absorbed the hydrogen chloride gas during the washing process is separated into the tank volume liquid zone, and the small water droplets entrained in the air stream are separated by the combined high-efficiency blade The separator and the nano-mixed gas-liquid separator perform deep separation. The separated liquid phase passes through gravity and a drainage tube to the bottom liquid accumulation area, and the purified gas phase is discharged from the top.
(7)本设计方案将气体吸收、气液高效分离相结合，设备简单、高效，同时能够减少耗水量。(7) This design scheme combines gas absorption and efficient gas-liquid separation. The equipment is simple and efficient, and at the same time, it can reduce water consumption.
本发明的有益效果在于：The beneficial effects of the present invention are:
(1)采用多级文丘里洗涤器串联结构形式，能够实现重整氢气的深度净化，减少洗涤液用量；(1) The multi-stage Venturi scrubber series structure is adopted to achieve deep purification of reformed hydrogen and reduce the amount of washing liquid;
(2)采用多级高效气液分离模块，可以减小设备体积，结合高效文丘里洗涤器可以实现高效的洗涤和分离，大大降低处理时间，提高处理效率。(2) The use of a multi-stage high-efficiency gas-liquid separation module can reduce the volume of the equipment. In combination with an efficient Venturi scrubber, efficient washing and separation can be achieved, greatly reducing processing time and improving processing efficiency.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是重整氢气净化装置的工艺位置及流程图。FIG. 1 is a process position and a flowchart of a reforming hydrogen purification device.
图2是实施例1文丘里洗涤器结构形式的装置结构示意图；2 is a schematic structural view of a device in the form of a venturi scrubber in Embodiment 1;
图3是单级文丘里洗涤器和分离器结构示意图。Figure 3 is a schematic diagram of the structure of a single-stage Venturi scrubber and separator.
一级文丘里入口1，一级文丘里注液喷嘴2，一级文丘里喉管3，二级文丘里入 口4，二级文丘里注液喷嘴5，二级文丘里喉管6，洗涤器与分离器连接法兰7，补充液入口8，裙座9，分离器排液口10，液位计接口11，液位计接口12，惯性分离分布器13，布气盘14，压差计接口15，气液高效分离内件16，压差计接口17，分离器出口18，重整氢气19，补充液20，差压计21，液位计22，循环泵23，外排水24，芳烃抽提装置25，PSA装置26，加氢装置27。First-level Venturi inlet 1, first-level Venturi injection nozzle 2, first-level Venturi throat 3, second-level Venturi inlet 4, second-level Venturi injection nozzle 5, second-level Venturi throat 6, washer Connection flange 7 to separator, replenishment inlet 8, skirt 9, drain outlet 10, level gauge interface 11, level gauge interface 12, inertial separation distributor 13, air distribution plate 14, pressure difference meter Interface 15, gas-liquid efficient internals 16, pressure differential gauge interface 17, separator outlet 18, reformed hydrogen 19, make-up liquid 20, differential pressure gauge 21, level gauge 22, circulation pump 23, external drainage 24, aromatic hydrocarbon Extraction device 25, PSA device 26, and hydrogenation device 27.
具体实施方式Detailed ways
下面，通过实施例对本发明进行具体描述。有必要在此指出的是，以下实施例只用于对本发明作进一步说明，不能理解为对本发明保护范围的限制，该领域的专业技术人员根据本发明的内容作出的一些非本质的改进和调整，仍属于本发明的保护范围。Hereinafter, the present invention will be specifically described through examples. It is necessary to point out here that the following examples are only used to further illustrate the present invention, and should not be understood as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the content of the present invention , Still belongs to the protection scope of the present invention.
实施例1Example 1
本申请的发明人经过广泛而深入的研究后发现，在重整工艺流程中采用文丘里洗涤器和气液分离器对重整氢气进行净化处理，具有较高的效率。After extensive and in-depth research, the inventors of the present application have found that the use of Venturi scrubbers and gas-liquid separators in the reforming process to purify reformed hydrogen has high efficiency.
某厂有重整氢需要处理，去除气体中含有的氯离子，具体工况条件如下：A plant needs to treat reformed hydrogen to remove the chloride ions contained in the gas. The specific working conditions are as follows:
工况Working condition 重整氢Reformed hydrogen
H 2 H 2 0.94250.9425
C1～C4C1 ～ C4 0.05350.0535
IC4IC4 0.00250.0025
H 2S H 2 S 0.00000.0000
NH 3 NH 3 0.00000.0000
H 2O H 2 O 0.00000.0000
C5+C5 + 0.00150.0015
Cl - Cl - ～2PPm～ 2PPm
总流量kg/hrTotal flow kg / hr 83338333
温度℃Temperature 4040
压力MPaPressure MPa 2.42.4
图1是重整氢气净化装置的工艺位置及流程图。图2是实施例1文丘里洗涤器结构形式的装置结构示意图；图3是单级文丘里洗涤器和分离器结构示意图。FIG. 1 is a process position and a flowchart of a reforming hydrogen purification device. FIG. 2 is a schematic structural diagram of a device in the form of a Venturi scrubber in Embodiment 1; and FIG. 3 is a schematic structural diagram of a single-stage Venturi scrubber and separator.
重整氢气由一级文丘里湿式洗涤器入口进入后，先减压加速至50m/s，高速气体将喉部注入的洗涤液(水)雾化，气液接触面积急剧增大；随后气流中氯化 氢气体被洗涤液快速吸收，在喉部之后设置的渐扩段使气体压力逐渐恢复；随着压力的升高，氯化氢气体在水中的溶解度加大，洗涤液进一步吸收氯化氢气体。完成气体吸收后，洗后重整氢气进入二级文丘里洗涤器，气体在二级文丘里渐缩段、喉管段以及渐扩段进行相同的洗涤过程，杂质气体被充分吸收。After the reformed hydrogen enters from the inlet of the first-stage Venturi wet scrubber, it is decompressed and accelerated to 50m / s. The high-speed gas atomizes the washing liquid (water) injected into the throat, and the gas-liquid contact area increases sharply. The hydrogen chloride gas is quickly absorbed by the washing liquid, and the gradual expansion section provided behind the throat gradually restores the gas pressure; as the pressure increases, the solubility of the hydrogen chloride gas in water increases, and the washing liquid further absorbs the hydrogen chloride gas. After the gas absorption is completed, the reformed hydrogen enters the secondary Venturi scrubber after washing, and the gas is subjected to the same washing process in the secondary Venturi shrinking section, throat section and gradual expanding section, and the impurity gas is fully absorbed.
通过惯性分离分布器对氢气流中的大液滴进行脱出，洗涤过程中吸收了杂质气体的洗涤液液滴被分离到罐体积液区，气流中夹带的小液滴通过组合高效叶片分离器和纳米混编气液分离器进行深度分离，分离后的液相通过重力和引流管到底部积液区，净化后的气相由顶部排出。The large droplets in the hydrogen flow are extracted through the inertial separation distributor. The washing liquid droplets that have absorbed the impurity gas during the washing process are separated into the tank volume liquid zone. The small droplets entrained in the air stream pass through the combined high-efficiency blade separator. The nano-mixed gas-liquid separator is used for deep separation. The separated liquid phase passes the gravity and the drainage tube to the bottom liquid accumulation area, and the purified gas phase is discharged from the top.
本设计方案将气体吸收、气液高效分离相结合，最终净化效率稳定在90％以上，设备简单、高效，同时能够减少耗水量。This design scheme combines gas absorption and gas-liquid efficient separation, and the final purification efficiency is stable at more than 90%. The equipment is simple and efficient, and it can reduce water consumption.

Claims (12)

  1. 一种适用于重整氢气净化的装置，包括洗涤器和气液分离器，其特征在于：所述洗涤器包括多级文丘里洗涤器，所述每级文丘里洗涤器由气体入口、渐缩段、喉管段、渐扩段、气体出口以及洗涤液入口、喷嘴组成，所述气液分离器由多级气液分离模块及分离器壳体组成。A device suitable for reforming hydrogen purification includes a scrubber and a gas-liquid separator, characterized in that the scrubber includes a multi-stage Venturi scrubber, and each stage of the Venturi scrubber has a gas inlet and a tapered section The gas-liquid separator is composed of a multi-stage gas-liquid separation module and a separator housing.
  2. 如权利要求1所述的装置，其特征在于，所述多级文丘里洗涤器采用串联结构形式，所述串联结构形式的第一级文丘里洗涤器出口与第二级文丘里洗涤器气体入口相连，最后一级文丘里洗涤器出口与分离器入口相连通。The device of claim 1, wherein the multi-stage Venturi scrubber adopts a tandem structure, and the first-stage Venturi scrubber outlet and the second-stage Venturi scrubber gas inlet in the series structure. Connected, the outlet of the last stage Venturi scrubber communicates with the inlet of the separator.
  3. 如权利要求1所述的装置，其特征在于，所述文丘里洗涤器渐缩段的渐缩角度为24～29°、扩散段的扩散角度为5～8°、喉部长度为喉部直径的0.5～2.2倍。The device according to claim 1, wherein the tapered angle of the tapered section of the venturi scrubber is 24-29 °, the diffusion angle of the diffused section is 5-8 °, and the length of the throat is the diameter of the throat 0.5 to 2.2 times.
  4. 如权利要求1所述的装置，其特征在于，所述喷嘴喷射角度为55～150°、喷嘴最前端与喉部入口的距离为喉部直径的0.1～1.5倍。The device according to claim 1, wherein the nozzle spray angle is 55 to 150 °, and the distance between the tip of the nozzle and the throat entrance is 0.1 to 1.5 times the diameter of the throat.
  5. 如权利要求1所述的装置，其特征在于，所述惯性分离分布器模块安装在气液分离器入口处，对气体进行均匀分布以及分离气体中夹带的较大液滴或固体颗粒。The device according to claim 1, wherein the inertial separation distributor module is installed at the inlet of the gas-liquid separator to uniformly distribute the gas and separate larger liquid droplets or solid particles entrained in the gas.
  6. 如权利要求1所述的装置，其特征在于，所述气液深度分离模块组成由高效叶片气液分离模块和纳米纤维混编高效气液分离模块组成，对气体中夹带的小液滴进行深度分离。The device according to claim 1, wherein the gas-liquid depth separation module is composed of a high-efficiency blade gas-liquid separation module and a nanofiber mixed high-efficiency gas-liquid separation module, and performs depth on small droplets entrained in the gas. Separation.
  7. 一种适用于重整氢气净化的方法，其特征在于，所述重整氢气先经过文丘里洗涤器洗涤去除杂质性气体，后进过多级气液分离模块脱除洗涤液，从而实现重整氢气体的高效净化处理；具体步骤如下：A method suitable for purification of reformed hydrogen, characterized in that the reformed hydrogen is first washed by a Venturi scrubber to remove impurity gases, and then is fed into a multi-stage gas-liquid separation module to remove washing liquid, thereby realizing reformed hydrogen Efficient purification of gas; the specific steps are as follows:
    (1)重整氢气体由一级文丘里湿式洗涤器入口进入后，先减压加速至40～60m/s，高速气体将喉部注入的洗涤液(水)雾化；(1) After the reformed hydrogen gas enters from the inlet of the first-stage Venturi wet scrubber, it is decompressed and accelerated to 40-60 m / s, and the high-speed gas atomizes the washing liquid (water) injected into the throat;
    (2)随后气流中氯化氢气体快速洗涤液吸收，在喉部之后设置的渐扩段使气体压力逐渐恢复；随着压力的升高，氯化氢气体在水中的溶解度加大，洗涤液进一步吸收氯化氢气体；(2) The hydrogen chloride gas is quickly absorbed by the washing liquid in the air stream, and the gradually expanding section behind the throat gradually restores the gas pressure; as the pressure increases, the solubility of the hydrogen chloride gas in water increases, and the washing liquid further absorbs the hydrogen chloride gas. ;
    (3)完成氯化氢气体吸收后，重整氢气体进入二级文丘里洗涤器，在二级 文丘里渐缩段、喉管段以及渐扩段进行相同的洗涤过程，以增加停留时间和进一步提高洗涤效果；(3) After the absorption of hydrogen chloride gas is completed, the reformed hydrogen gas enters the secondary venturi scrubber, and the same washing process is performed in the secondary venturi shrinking section, throat section and expanding section to increase the residence time and further improve the washing. effect;
    (4)通过惯性分离分布器对重整氢气流中的大水滴进行脱出，洗涤过程中吸收了氯化氢气体的洗涤液被分离到罐体积液区，气流中夹带的小水滴通过组合高效叶片分离器和纳米混编气液分离器进行深度分离，分离后的液相通过重力和引流管到底部积液区，净化后的气相由顶部排出。(4) The large water droplets in the reformed hydrogen stream are extracted through the inertial separation distributor. The washing liquid that has absorbed the hydrogen chloride gas during the washing process is separated into the tank volume liquid zone. The small water droplets entrained in the air stream are separated by a combination of high-efficiency blades. The separator and the nano-mixed gas-liquid separator perform deep separation. The separated liquid phase passes through gravity and a drainage tube to the bottom liquid accumulation area, and the purified gas phase is discharged from the top.
  8. 如权利要求7所述的方法，其特征在于，所述重整氢气体中含有需要去除的杂质性气体组分，所述杂质性气体组分可被洗涤液吸收，所述吸收的体积比不小于300，所述体积比为常温常压下使每体积吸收液达到饱和状态所吸收的杂质气体体积。The method according to claim 7, characterized in that the reformed hydrogen gas contains an impurity gas component to be removed, the impurity gas component can be absorbed by the washing liquid, and the absorbed volume ratio is not The volume ratio is less than 300, and the volume ratio is the volume of the impurity gas absorbed by each volume of the absorption liquid to reach a saturated state under normal temperature and pressure.
  9. 如权利要求7所述的方法，所述洗涤液用量为需处理的杂质气体体积除以吸收体积比，所述吸收体积比是指在操作压力和温度下使每体积吸收液达到吸收饱和时的杂质气体的体积值。The method according to claim 7, wherein the amount of the washing liquid is the volume of the impurity gas to be treated divided by the absorption volume ratio, and the absorption volume ratio refers to the time when the absorption pressure of each volume of the absorption liquid is saturated under the operating pressure and temperature. Volume value of impurity gas.
  10. 如权利要求7所述的方法，其特征在于，所述重整氢气在每级文丘里洗涤器中经过渐缩段、喉部、渐扩段时有先加速后减速的过程。The method according to claim 7, characterized in that the reformed hydrogen gas has a process of first accelerating and then decelerating when passing through the tapered section, throat, and gradually expanded section in each stage of the Venturi scrubber.
  11. 如权利要求10所述的方法，其特征在于，所述文丘里洗涤器入口气速为8～22m/s、喉部气速为35～65m/s，出口气速为8～22m/s。The method according to claim 10, wherein the air velocity at the inlet of the venturi scrubber is 8-22 m / s, the air velocity at the throat is 35-65 m / s, and the air velocity at the outlet is 8-22 m / s.
  12. 如权利要求11所述的方法，其特征在于，所述喉部高速气流能够对通过喷嘴喷入的洗涤液进行雾化，所述雾化后液滴平均尺寸小于80微米。The method according to claim 11, wherein the throat high-speed airflow is capable of atomizing the washing liquid sprayed through the nozzle, and the average size of the droplets after the atomization is less than 80 microns.
PCT/CN2019/088708 2018-05-28 2019-05-28 Method and device suitable for purification of reforming hydrogen WO2019228320A1 (en)

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