WO2019228320A1 - Procédé et dispositif appropriés pour la purification de l'hydrogène de reformage - Google Patents

Procédé et dispositif appropriés pour la purification de l'hydrogène de reformage Download PDF

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Publication number
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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WO
WIPO (PCT)
Prior art keywords
gas
liquid
throat
stage
venturi scrubber
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Application number
PCT/CN2019/088708
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English (en)
Chinese (zh)
Inventor
杨强
钱运东
黄燎云
李冰冰
张毅文
Original Assignee
上海米素环保科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 上海米素环保科技有限公司 filed Critical 上海米素环保科技有限公司
Publication of WO2019228320A1 publication Critical patent/WO2019228320A1/fr

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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

Definitions

  • 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)
  • Inorganic Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

L'invention concerne un procédé et un dispositif appropriés pour la purification d'hydrogène de reformage. Le dispositif comprend un épurateur et un séparateur gaz-liquide, l'épurateur comprenant un épurateur venturi à étages multiples, chaque étage d'épurateur venturi étant composé d'une entrée de gaz, une section conique, une section gorge, une section divergente, une sortie de gaz, une entrée de liquide de lavage, une buse, etc. ; et le séparateur gaz-liquide est composé d'un module de séparation gaz-liquide à étages multiples et d'un boîtier de séparateur. L'hydrogène de reformage est tout d'abord passé à travers l'épurateur venturi pour éliminer et éliminer les gaz d'impureté, puis passé à travers le module de séparation gaz-liquide à étages multiples pour éliminer un liquide de lavage, ce qui permet de réduire considérablement la teneur en gaz d'impureté nocifs, ce qui permet de réaliser la purification de l'hydrogène de reformage.
PCT/CN2019/088708 2018-05-28 2019-05-28 Procédé et dispositif appropriés pour la purification de l'hydrogène de reformage WO2019228320A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810521693.7A CN110540173A (zh) 2018-05-28 2018-05-28 一种适用于重整氢气净化的方法和装置
CN201810521693.7 2018-05-28

Publications (1)

Publication Number Publication Date
WO2019228320A1 true WO2019228320A1 (fr) 2019-12-05

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PCT/CN2019/088708 WO2019228320A1 (fr) 2018-05-28 2019-05-28 Procédé et dispositif appropriés pour la purification de l'hydrogène de reformage

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WO (1) WO2019228320A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111613349B (zh) * 2020-05-29 2023-08-08 上海交通大学 基于流体自振荡和微界面强化的微量气体脱除装置及方法
CN114832510B (zh) * 2022-06-08 2024-05-14 阳光氢能科技有限公司 一种气液分离器及电解水制氢系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203916447U (zh) * 2014-06-18 2014-11-05 四川永祥多晶硅有限公司 一种氯硅烷尾气湿法洗涤装置
US20160151759A1 (en) * 2012-09-24 2016-06-02 Kappes, Cassiday & Associates Sand bed downdraft furnace and activated carbon scrubber
CN105879580A (zh) * 2016-04-06 2016-08-24 中冶南方工程技术有限公司 盐酸废液再生方法及系统
CN106582155A (zh) * 2017-01-03 2017-04-26 昆明理工大学 炼锌尾气氨水协同脱除金属锌及重金属的资源化利用方法
CN206325307U (zh) * 2016-11-25 2017-07-14 张青峰 一种高效气液分离器

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202715331U (zh) * 2012-03-26 2013-02-06 武汉理工大学 文丘里洗涤除尘器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160151759A1 (en) * 2012-09-24 2016-06-02 Kappes, Cassiday & Associates Sand bed downdraft furnace and activated carbon scrubber
CN203916447U (zh) * 2014-06-18 2014-11-05 四川永祥多晶硅有限公司 一种氯硅烷尾气湿法洗涤装置
CN105879580A (zh) * 2016-04-06 2016-08-24 中冶南方工程技术有限公司 盐酸废液再生方法及系统
CN206325307U (zh) * 2016-11-25 2017-07-14 张青峰 一种高效气液分离器
CN106582155A (zh) * 2017-01-03 2017-04-26 昆明理工大学 炼锌尾气氨水协同脱除金属锌及重金属的资源化利用方法

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