WO2022160792A1 - 冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统 - Google Patents

冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统 Download PDF

Info

Publication number
WO2022160792A1
WO2022160792A1 PCT/CN2021/124905 CN2021124905W WO2022160792A1 WO 2022160792 A1 WO2022160792 A1 WO 2022160792A1 CN 2021124905 W CN2021124905 W CN 2021124905W WO 2022160792 A1 WO2022160792 A1 WO 2022160792A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydrogen
annealing furnace
waste hydrogen
waste
cold rolling
Prior art date
Application number
PCT/CN2021/124905
Other languages
English (en)
French (fr)
Inventor
胡学羽
潘宏
夏朝晖
王龙锋
Original Assignee
中冶南方工程技术有限公司
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.)
Filing date
Publication date
Application filed by 中冶南方工程技术有限公司 filed Critical 中冶南方工程技术有限公司
Publication of WO2022160792A1 publication Critical patent/WO2022160792A1/zh

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention belongs to the technical field of cold rolling and annealing production, and in particular relates to a cold rolling annealing furnace waste hydrogen recycling system and a cold rolling annealing furnace hydrogen supply system including the cold rolling annealing furnace waste hydrogen recycling system.
  • the cold rolling annealing furnace of iron and steel metallurgical enterprises uses high-purity hydrogen as protective gas, and the protective gas after use is discharged as exhaust gas.
  • Metallurgical enterprises have high resource investment in the construction and operation of hydrogen production units, and the hydrogen production process will also produce some solid waste pollution; and the hydrogen content of waste hydrogen generated by annealing furnaces is as high as 80%, which is undoubtedly a waste of resources. huge waste.
  • some companies have carried out research on the recovery of waste hydrogen from annealing furnaces, but there are still problems such as relatively low purity of the obtained hydrogen, which cannot well meet the production requirements of existing annealing furnaces.
  • the invention relates to a cold rolling annealing furnace waste hydrogen recycling system and a cold rolling annealing furnace hydrogen supply system including the cold rolling annealing furnace waste hydrogen recycling system, which can at least solve some defects of the prior art.
  • the invention relates to a waste hydrogen recovery and utilization system of a cold rolling annealing furnace, which comprises a waste hydrogen treatment pipeline connected with the annealing furnace, and a pretreatment tower and a waste hydrogen compressor are sequentially arranged on the waste hydrogen treatment pipeline along the flow direction of the waste hydrogen.
  • a pressure swing adsorption tower and a deoxygenation drying tower wherein the pretreatment tower is provided with a first adsorbent layer that can remove the emulsion and moisture contained in waste hydrogen, and the pressure swing adsorption tower is provided with a layer for adsorption The second adsorbent layer for denitrification.
  • an inlet buffer tank is arranged between the pretreatment tower and the waste hydrogen compressor.
  • pretreatment towers there are two pretreatment towers and they are used as backup for each other.
  • waste hydrogen compressors there are two waste hydrogen compressors and they are used as backup for each other.
  • the present invention also relates to a hydrogen supply system for a cold rolling annealing furnace, which includes a hydrogen supply main pipe connected to the annealing furnace, and also includes the above-mentioned cold rolling and annealing furnace waste hydrogen recovery and utilization system. connected to the hydrogen supply main.
  • the cold-rolling annealing furnace waste hydrogen recovery and utilization system further includes a hydrogen storage spherical tank, and the hydrogen supply main pipe is connected to a gas supply port of the hydrogen storage spherical tank.
  • the cold rolling annealing furnace waste hydrogen recovery and utilization system further includes an unloading column adapted to be connected to the hydrogen supply tube bundle vehicle, and the unloading column is connected to the gas storage port of the hydrogen storage spherical tank.
  • the present invention removes the emulsion and moisture contained in the waste hydrogen by the pretreatment tower, uses the waste hydrogen compressor to pressurize the waste hydrogen, uses the pressure swing adsorption tower to remove the nitrogen in the waste hydrogen, and then uses the deoxygenation drying tower to remove the nitrogen.
  • the oxygen in the waste hydrogen can obtain high-purity hydrogen that meets the process requirements of the annealing furnace, realize the recycling of the waste hydrogen of the annealing furnace, and reduce the energy consumption and production cost of the annealing furnace production.
  • FIG. 1 is a schematic composition diagram of a hydrogen supply system for a cold rolling annealing furnace provided in an embodiment of the present invention.
  • an embodiment of the present invention provides a waste hydrogen recovery and utilization system of a cold rolling annealing furnace, including a waste hydrogen treatment pipeline 26 connected to the annealing furnace 1, and arranged in sequence on the waste hydrogen treatment pipeline 26 along the flow direction of the waste hydrogen
  • a pretreatment tower 21 is provided with a first adsorption that can remove the emulsion and moisture contained in the waste hydrogen.
  • the pressure swing adsorption tower 24 is provided with a second adsorbent layer for adsorption denitrification.
  • Hydrogen is used as the protective gas of the annealing furnace. Due to the annealing process, the waste hydrogen discharged from the annealing furnace 1 will be mixed with impurities such as emulsion, nitrogen, and trace oxygen, and the pressure will also drop to more than ten kPa. This quality of waste hydrogen cannot be used as protection. gas continues to be used.
  • the purpose of the cold rolling annealing furnace waste hydrogen recycling system provided in this embodiment is to process the waste hydrogen generated by the annealing furnace 1 to be suitable for the process requirements of the annealing furnace 1, specifically including purifying and pressurizing the waste hydrogen.
  • the purpose of the above-mentioned pretreatment tower 21 is to remove liquid-phase impurities such as emulsion and moisture from waste hydrogen.
  • the waste hydrogen is mainly pretreated by physical adsorption; preferably, the above-mentioned first adsorbent layer mainly uses porous media material as the adsorbent, and in one embodiment, activated carbon is used.
  • the above-mentioned pretreatment tower 21 is a vertical tower body, and the above-mentioned first adsorbent layer is generally a material layer arranged horizontally; Porous medium material is laid on the grid plate to form the above-mentioned first adsorbent layer; further preferably, multiple first adsorbent layers are arranged in the pretreatment tower 21, and each first adsorbent layer is arranged at intervals from top to bottom, It can ensure the pretreatment effect of waste hydrogen.
  • pretreatment towers 21 there are two pretreatment towers 21 and are used as backup for each other.
  • the adsorbent in a single pretreatment tower 21 is saturated with adsorption, it can be switched for use, and the off-line pretreatment tower 21 can be used for adsorption. regeneration treatment.
  • the outlet gas of the pretreatment tower 21 is a nitrogen-hydrogen gas mixture, which is also mixed with a trace amount of oxygen. Because the subsequent process adopts the separation scheme of pressure swing adsorption, there are certain requirements for the gas pressure; the above-mentioned waste hydrogen compressor 23 is used for boosting the waste hydrogen gas. Further preferably, as shown in FIG. 1 , there are two waste hydrogen compressors 23 and they are used as backup for each other, which can ensure the continuous and stable operation of the system and improve the reliability of the system operation.
  • an inlet buffer tank 22 is arranged between the pretreatment tower 21 and the waste hydrogen compressor 23 .
  • the inlet buffer tank 22 can play the role of buffering waste hydrogen, and can coordinate the production pace of the preceding and following processes, and improve the operation stability of the waste hydrogen compressor 23 .
  • the main function of the above-mentioned pressure swing adsorption tower 24 is to realize the separation of hydrogen and nitrogen in waste hydrogen by adopting the pressure swing adsorption method. Specifically, it utilizes the difference in the adsorption capacity of adsorbents for gases under different pressures to perform pressurized adsorption and depressurized desorption.
  • Each pressure swing adsorption tower 24 undergoes adsorption, pressure equalization drop, smooth discharge, reverse discharge, and flushing in sequence. , pressure equalization rise, final pressure rise, etc., to achieve cyclic work; the reverse discharge step can discharge part of the impurity components occluded in the pressure swing adsorption tower 24, and most of the remaining impurities can be further completely desorbed by the flushing step.
  • the above-mentioned pressure swing adsorption tower 24 has a purified gas outlet and a desorption gas outlet, wherein the purified gas outlet is connected to the subsequent deoxygenation drying tower 25 .
  • the main component of the stripping gas discharged from the above-mentioned stripping gas outlet is nitrogen, and contains a small amount of hydrogen, and the stripping gas outlet can be connected to a stripping gas storage tank.
  • control valves are respectively provided on the purified gas outlet pipe and the desorption gas outlet pipe to control the direction of the outlet gas of the pressure swing adsorption tower 24 .
  • the adsorbent used in the above-mentioned pressure swing adsorption tower 24 is generally molecular sieve; the above-mentioned pressure swing adsorption tower 24 is a vertical tower body, and the above-mentioned second adsorbent layer is generally a material layer arranged horizontally; A grid plate is arranged in the tower body of the pressure swing adsorption tower 24, and adsorbents such as molecular sieves are laid on the grid plate to form the above-mentioned second adsorbent layer; further preferably, a multi-layer first adsorbent layer is arranged in the pressure swing adsorption tower 24. Two adsorbent layers, each second adsorbent layer is arranged at intervals from top to bottom.
  • the desorption gas obtained by the above-mentioned pressure swing adsorption tower 24 can be used for the regeneration of the first adsorbent layer in the pretreatment tower 21, that is, the desorption gas is passed into the pretreatment tower 21 to purge the first adsorbent layer,
  • the adsorption channel in the porous medium material can be cleaned;
  • the desorption gas inlet can be located above the first adsorbent layer, and the first adsorbent layer can be backflushed to improve the regeneration effect and efficiency, emulsion, moisture, etc. It can also fall to the bottom of the pretreatment tower 21 by its own weight and be cleaned.
  • the stripping gas can be heated and then passed into the pretreatment tower 21, that is, the above-mentioned stripping gas storage tank is connected to the pretreatment tower 21 through the stripping gas purging pipe, and the stripping gas purging pipe is connected to the pretreatment tower 21.
  • a heat exchanger is arranged; in one embodiment, the desorption gas is heated by using the flue gas of the annealing furnace, and the waste heat of the flue gas of the annealing furnace can be used at the same time to further improve the environmental protection and economy of the production of the annealing furnace 1, and also That is, the flue gas outlet pipe of the annealing furnace 1 is connected to the above-mentioned heat exchanger, and the heat exchanger can be a conventional gas-gas indirect heat exchanger.
  • the purified gas discharged from the pressure swing adsorption tower 24 is high-purity hydrogen, but may still contain a small amount of oxygen.
  • the main function of the above-mentioned deoxygenation drying tower 25 is to remove this part of oxygen and dry the gas.
  • the purity of the hydrogen discharged from the deoxidizing drying tower 25 can be higher than 99.999%, the oxygen content is lower than 5ppm, and the dew point temperature is lower than -60°C, which meets the technological requirements of the annealing furnace 1 .
  • the cold rolling annealing furnace waste hydrogen recycling system removes the emulsion and moisture contained in the waste hydrogen through the pretreatment tower 21, uses the waste hydrogen compressor 23 to pressurize the waste hydrogen, and uses the pressure swing adsorption tower. 24 Removing nitrogen in waste hydrogen and reusing deoxidizing drying tower 25 to remove oxygen in waste hydrogen, high-purity hydrogen that meets the technological requirements of annealing furnace 1 can be obtained, the recycling of waste hydrogen in annealing furnace is realized, and the reduction of annealing furnace 1 Production energy consumption and production costs.
  • an embodiment of the present invention provides a hydrogen supply system for a cold rolling annealing furnace, including a hydrogen supply main pipe 3 connected to the annealing furnace 1, which further includes the cold rolling annealing furnace waste hydrogen recovery and utilization provided by the above-mentioned first embodiment system, the outlet end of the waste hydrogen treatment pipeline 26 is bypassed to the hydrogen supply main pipe 3 .
  • the cold rolling annealing furnace waste hydrogen recycling system further includes a hydrogen storage spherical tank 4 , and the hydrogen supply main pipe 3 is connected to the gas supply port of the hydrogen storage spherical tank 4 .
  • the hydrogen storage spherical tank 4 can be used to store externally supplied hydrogen, and can also buffer pressure fluctuations in the hydrogen supply main pipe 3 .
  • the hydrogen storage spherical tank 4 can supplement the loss in the hydrogen circulation process; In the case of failure maintenance of the recycling system, etc., the hydrogen storage spherical tank 4 can be used to ensure the hydrogen supply within a certain period of time, so as to reserve transportation time for the external hydrogen supply.
  • the cold-rolling annealing furnace waste hydrogen recovery and utilization system also includes an unloading column 5 suitable for connecting with the hydrogen supply tube bundle 6.
  • the unloading column 5 is connected to the storage space of the hydrogen storage spherical tank 4. Air connection.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

本发明涉及一种冷轧退火炉废氢回收利用系统，包括与退火炉连接的废氢处理管道，沿废氢流通方向于废氢处理管道上依次布置有预处理塔、废氢压缩机、变压吸附塔和脱氧干燥塔，预处理塔中设有能脱除废氢中所含乳化液及水分的第一吸附剂层，变压吸附塔中设有用于吸附脱氮的第二吸附剂层。另外还涉及采用上述冷轧退火炉废氢回收利用系统的冷轧退火炉氢气供应系统。本发明通过预处理塔脱除废氢中所含乳化液及水分、利用废氢压缩机对废氢进行加压、利用变压吸附塔脱除废氢中的氮气、再利用脱氧干燥塔脱除废氢中的氧气，能获得满足退火炉工艺要求的高纯氢气，实现对退火炉废氢的回收利用，降低退火炉生产的能耗和生产成本。

Description

冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统 技术领域
本发明属于冷轧退火生产技术领域，具体涉及一种冷轧退火炉废氢回收利用系统及包括该冷轧退火炉废氢回收利用系统的冷轧退火炉氢气供应系统。
背景技术
钢铁冶金企业冷轧退火炉采用高纯氢气作为保护气，使用后的保护气作为废气排放。冶金企业在制氢装置建设及运行上的资源投入较高，制氢过程也会产生一些固废污染；而退火炉所产生的废氢中氢气含量高达80％以上，作为废气排放无疑是对资源的极大浪费。目前有企业对退火炉废氢回收进行了研究，但仍存在所得氢气纯度相对较低、不能较好地适应现有退火炉生产要求等问题。
发明内容
本发明涉及一种冷轧退火炉废氢回收利用系统及包括该冷轧退火炉废氢回收利用系统的冷轧退火炉氢气供应系统，至少可解决现有技术的部分缺陷。
本发明涉及一种冷轧退火炉废氢回收利用系统，包括与退火炉连接的废氢处理管道，沿废氢流通方向于所述废氢处理管道上依次布置有预处理塔、废氢压缩机、变压吸附塔和脱氧干燥塔，其中，所述预处理塔中设有能脱除废氢中所含乳化液及水分的第一吸附剂层，所述变压吸附塔中设有用于吸附脱氮的第二吸附剂层。
作为实施方式之一，于所述预处理塔与所述废氢压缩机之间布置有入口缓冲罐。
作为实施方式之一，所述预处理塔有两座并且互为备用。
作为实施方式之一，所述废氢压缩机有两台并且互为备用。
本发明还涉及一种冷轧退火炉氢气供应系统，包括与退火炉连接的氢气供应主管，还包括如上所述的冷轧退火炉废氢回收利用系统，所述废氢处理管道的出口端旁接至所述氢气供应主管上。
作为实施方式之一，该冷轧退火炉废氢回收利用系统还包括储氢球罐，所述氢气供应主管与所述储氢球罐的供气口连接。
作为实施方式之一，该冷轧退火炉废氢回收利用系统还包括适于与供氢管束车连接的卸气柱，所述卸气柱与所述储氢球罐的储气口连接。
本发明至少具有如下有益效果：
本发明通过预处理塔脱除废氢中所含乳化液及水分、利用废氢压缩机对废氢进行加压、利用变压吸附塔脱除废氢中的氮气、再利用脱氧干燥塔脱除废氢中的氧气，能获得满足退火炉工艺要求的高纯氢气，实现对退火炉废氢的回收利用，降低退火炉生产的能耗和生产成本。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1为本发明实施例提供的冷轧退火炉氢气供应系统的组成示意图。
具体实施方式
下面对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
实施例一
如图1，本发明实施例提供一种冷轧退火炉废氢回收利用系统，包括与退火炉1连接的废氢处理管道26，沿废氢流通方向于所述废氢处理管道26上依次布置有预处理塔21、废氢压缩机23、变压吸附塔24和脱氧干燥塔25，其中，所述预处理塔21中设有能脱除废氢中所含乳化液及水分的第一吸附剂层，所述变压吸附塔24中设有用于吸附脱氮的第二吸附剂层。
氢气作为退火炉保护气被使用，由于退火工艺原因，退火炉1排出的废氢会混杂乳化液、氮气、微量氧气等杂质，压力也降至十几kPa，这种品质的废氢无法作为保护气继续使用。本实施例提供的冷轧退火炉废氢回收利用系统的目的即在于将退火炉1产生的废氢处理至能适用于退火炉1的工艺要求，具体包括对废氢进行纯化处理并加压。
上述预处理塔21的目的在于：用于对废氢进行乳化液、水分等液相杂质的脱除。本实施例中，主要采用物理吸附的方式对废氢进行预处理；优选地，上述第一吸附剂层主要采用多孔介质材料作为吸附剂，在其中一个实施例中，采用活性炭。上述预处理塔21为立式塔体，上述第一吸附剂层一般为水平设置的料层；本实施例中，优选地，在预处理塔21的塔体内设置格栅板，并在该格栅板上铺设多孔介质材料以构成上述的第一吸附剂层；进一步优选地，在预处理塔21内布置有多层第一吸附剂层，各第一吸附剂层自上而下间隔布置，能保证对废氢的预处理效果。
进一步优选地，如图1，所述预处理塔21有两座并且互为备用，单座预处理塔21内的吸附剂吸附饱和时可进行切换使用，离线的预处理塔21可进行吸附剂再生处理。
预处理塔21出口气体为氮氢混合气，还混有微量氧气。因为后续工艺采用 变压吸附的分离方案，对气体压力有一定的要求；上述废氢压缩机23即用于对废氢气体进行升压处理。进一步优选地，如图1，所述废氢压缩机23有两台并且互为备用，可保证系统连续稳定运行，提高系统运行的可靠性。
进一步优选地，如图1，于所述预处理塔21与所述废氢压缩机23之间布置有入口缓冲罐22。该入口缓冲罐22可起到缓存废氢的作用，可协调前后工序的生产步调，提高废氢压缩机23的运行稳定性。
上述变压吸附塔24的主要作用在于：采用变压吸附的方法，实现废氢中氢气与氮气的分离。具体地，其利用了吸附剂在不同压力下对气体吸附能力的差别，进行加压吸附、降压解吸，每座变压吸附塔24依次经历吸附、压力均衡降、顺放、逆放、冲洗、压力均衡升、最终升压等时期，实现循环工作；逆放步骤能排出变压吸附塔24中吸留的部分杂质组分，剩余的大部分杂质可通过冲洗步骤进一步完全解吸。
可以理解地，上述变压吸附塔24具有提纯气出口和解吸气出口，其中，提纯气出口与后续的脱氧干燥塔25连接。上述解吸气出口排出的解吸气主要成分为氮气，含有少量的氢气，该解吸气出口可连接解吸气储罐。相应地，在提纯气出口管和解吸气出口管上分别设置控制阀，以控制变压吸附塔24的出口气走向。为保证生产的连续，上述变压吸附塔24一般为至少两座，以便始终能保证其中一塔处于吸附状态，另一座塔处于完全解吸状态。
上述变压吸附塔24采用的吸附剂一般为分子筛；上述变压吸附塔24为立式塔体，上述第二吸附剂层一般为水平设置的料层；本实施例中，优选地，在变压吸附塔24的塔体内设置格栅板，并在该格栅板上铺设分子筛等吸附剂以构成上述的第二吸附剂层；进一步优选地，在变压吸附塔24内布置有多层第二吸附剂层，各第二吸附剂层自上而下间隔布置。
进一步优选地，上述变压吸附塔24获得的解吸气可用于预处理塔21内的第一吸附剂层的再生，即将解吸气通入预处理塔21内吹扫第一吸附剂层，可对多孔介质材料中的吸附通道进行清理；解吸气通入口可位于第一吸附剂层的上方，对该第一吸附剂层进行反吹，可提高再生效果和效率，乳化液、水分等也能借助自重作用而落至预处理塔21的底部并进行清理。进一步地，可对解吸气进行加热后再通入预处理塔21内，即上述解吸气储罐通过解吸气吹扫管与预处理塔21连接，在该解吸气吹扫管上布置有换热器；在其中一个实施例中，利用退火炉烟气对该解吸气进行加热，可同时利用退火炉烟气的余热，进一步提高退火炉1生产的环保性和经济性，也即退火炉1的烟气出口管连接至上述换热器，该换热器可采用常规的气-气间接式换热器。
经变压吸附塔24排出的提纯气为高纯氢气，但仍可能含有微量的氧气，上述脱氧干燥塔25的主要作用即在于脱除这部分氧气，并对气体进行干燥。脱氧干燥塔25排出的氢气纯度可高于99.999％，含氧量低于5ppm，露点温度小于-60℃，满足退火炉1的工艺要求。
本实施例提供的冷轧退火炉废氢回收利用系统，通过预处理塔21脱除废氢中所含乳化液及水分、利用废氢压缩机23对废氢进行加压、利用变压吸附塔24脱除废氢中的氮气、再利用脱氧干燥塔25脱除废氢中的氧气，能获得满足退火炉1工艺要求的高纯氢气，实现对退火炉废氢的回收利用，降低退火炉1生产的能耗和生产成本。
实施例二
如图1，本发明实施例提供一种冷轧退火炉氢气供应系统，包括与退火炉1连接的氢气供应主管3，其进一步还包括上述实施例一所提供的冷轧退火炉废氢回收利用系统，所述废氢处理管道26的出口端旁接至所述氢气供应主管3上。
进一步地，如图1，该冷轧退火炉废氢回收利用系统还包括储氢球罐4，所述氢气供应主管3与所述储氢球罐4的供气口连接。该储氢球罐4可用于储存外供的氢气，也可缓冲氢气供应主管3内的压力波动。在稳定生产过程中，可通过上述冷轧退火炉废氢回收利用系统供给大部分的氢气，由上述储氢球罐4补充氢气循环过程中的损耗量；另外，在上述冷轧退火炉废氢回收利用系统故障检修等情况下，可通过上述储氢球罐4保证一定时间内的氢气供应，以便为外供氢气预留运输时间等。
进一步地，如图1，该冷轧退火炉废氢回收利用系统还包括适于与供氢管束车6连接的卸气柱5，所述卸气柱5与所述储氢球罐4的储气口连接。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (7)

  1. 一种冷轧退火炉废氢回收利用系统，包括与退火炉连接的废氢处理管道，其特征在于：沿废氢流通方向于所述废氢处理管道上依次布置有预处理塔、废氢压缩机、变压吸附塔和脱氧干燥塔，其中，所述预处理塔中设有能脱除废氢中所含乳化液及水分的第一吸附剂层，所述变压吸附塔中设有用于吸附脱氮的第二吸附剂层。
  2. 如权利要求1所述的冷轧退火炉废氢回收利用系统，其特征在于：于所述预处理塔与所述废氢压缩机之间布置有入口缓冲罐。
  3. 如权利要求1所述的冷轧退火炉废氢回收利用系统，其特征在于：所述预处理塔有两座并且互为备用。
  4. 如权利要求1所述的冷轧退火炉废氢回收利用系统，其特征在于：所述废氢压缩机有两台并且互为备用。
  5. 一种冷轧退火炉氢气供应系统，包括与退火炉连接的氢气供应主管，其特征在于：还包括如权利要求1至4中任一项所述的冷轧退火炉废氢回收利用系统，所述废氢处理管道的出口端旁接至所述氢气供应主管上。
  6. 如权利要求5所述的冷轧退火炉废氢回收利用系统，其特征在于：还包括储氢球罐，所述氢气供应主管与所述储氢球罐的供气口连接。
  7. 如权利要求6所述的冷轧退火炉废氢回收利用系统，其特征在于：还包括适于与供氢管束车连接的卸气柱，所述卸气柱与所述储氢球罐的储气口连接。
PCT/CN2021/124905 2021-01-26 2021-10-20 冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统 WO2022160792A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110104464.7A CN112941287A (zh) 2021-01-26 2021-01-26 冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统
CN202110104464.7 2021-01-26

Publications (1)

Publication Number Publication Date
WO2022160792A1 true WO2022160792A1 (zh) 2022-08-04

Family

ID=76237059

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/124905 WO2022160792A1 (zh) 2021-01-26 2021-10-20 冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统

Country Status (2)

Country Link
CN (1) CN112941287A (zh)
WO (1) WO2022160792A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114717402A (zh) * 2022-04-06 2022-07-08 江苏中基复合材料有限公司 一种退火炉余热利用与空气净化系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112941287A (zh) * 2021-01-26 2021-06-11 中冶南方工程技术有限公司 冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统
CN114540598A (zh) * 2022-02-07 2022-05-27 中冶南方工程技术有限公司 一种冷轧退火炉保护气供气及循环利用方法
CN116212599B (zh) * 2023-05-06 2023-08-22 江苏申氢宸科技有限公司 氮氢水分离器及基于氮氢水分离的燃料电池氢循环系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015038015A (ja) * 2013-07-19 2015-02-26 大阪瓦斯株式会社 圧力変動吸着式水素製造方法
CN207498434U (zh) * 2017-10-23 2018-06-15 唐山钢铁集团有限责任公司 一种冷轧罩式退火炉尾气回收装置
CN209291952U (zh) * 2018-11-28 2019-08-23 西南化工研究设计院有限公司 一种冷轧退火全氢罩式炉废氢净化提纯系统
CN212024771U (zh) * 2020-05-09 2020-11-27 成都华西堂环保科技有限公司 钢厂退火炉保护气体制取高纯氢系统
CN112941287A (zh) * 2021-01-26 2021-06-11 中冶南方工程技术有限公司 冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110595221A (zh) * 2019-10-08 2019-12-20 江苏维麦气体科技有限公司 一种镀锌连续退火炉尾气回收处理循环利用装置及其处理工艺
CN110822924B (zh) * 2019-10-31 2021-05-14 湖南华菱涟钢薄板有限公司 一种冷轧罩式炉尾气回收利用方法及其系统
CN215668108U (zh) * 2021-01-26 2022-01-28 中冶南方工程技术有限公司 冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015038015A (ja) * 2013-07-19 2015-02-26 大阪瓦斯株式会社 圧力変動吸着式水素製造方法
CN207498434U (zh) * 2017-10-23 2018-06-15 唐山钢铁集团有限责任公司 一种冷轧罩式退火炉尾气回收装置
CN209291952U (zh) * 2018-11-28 2019-08-23 西南化工研究设计院有限公司 一种冷轧退火全氢罩式炉废氢净化提纯系统
CN212024771U (zh) * 2020-05-09 2020-11-27 成都华西堂环保科技有限公司 钢厂退火炉保护气体制取高纯氢系统
CN112941287A (zh) * 2021-01-26 2021-06-11 中冶南方工程技术有限公司 冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HAN YU-LONG, SONG JIAN-GANG;GAO JUN: "Hydrogen recovery plan and application in bell type annealing furnace of Baotou Iron &Steel CSP Plant", STEEL ROLLING, vol. 35, no. 6, 1 December 2018 (2018-12-01), pages 90 - 92, XP055953538, ISSN: 1003-9996, DOI: １０．１３２２８／ｊ．ｂｏｙｕａｎ．ｉｓｓｎ１００３－９９９６．２０１７０２１２ *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114717402A (zh) * 2022-04-06 2022-07-08 江苏中基复合材料有限公司 一种退火炉余热利用与空气净化系统

Also Published As

Publication number Publication date
CN112941287A (zh) 2021-06-11

Similar Documents

Publication Publication Date Title
WO2022160792A1 (zh) 冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统
KR101388266B1 (ko) 고로가스의 분리방법 및 장치
CN1029779C (zh) 一种改进的生产干燥高纯氮气的方法和系统
US3221476A (en) Adsorption-desorption method
CN113310063A (zh) 一种玻璃窑烟气二氧化碳的捕集提纯装置及捕集提纯方法
JPH01172204A (ja) 混合ガスから炭酸ガスを吸着分離回収する方法
CN102083512A (zh) 二氧化碳回收
CN108619859B (zh) 一种耦合式变压吸附制气系统及方法
JPH02281096A (ja) 富メタン混合ガスの炭酸ガス及び水分を除去する装置
SE2350521A1 (en) System and method for synchronous recovery of carbon dioxide and nitrogen gas from flue gas by chemical method and psa method
CN215259901U (zh) 一种玻璃窑烟气二氧化碳的捕集提纯装置
CN111495113A (zh) 一种固定床式烟气低温吸附脱硫系统及方法
CN202569905U (zh) 一种净化多晶硅尾气的氢气纯化装置
JP5498661B2 (ja) 高炉ガスの分離方法
CN116059784A (zh) 一种变压吸附捕集烟气二氧化碳的方法及系统
CN113200518A (zh) 一种从兰炭尾气中回收提纯氢气的方法
CN108236829B (zh) 从含co2原料气中分离高纯度co2的方法及装置
CN215668108U (zh) 冷轧退火炉废氢回收利用系统及冷轧退火炉氢气供应系统
CN201410351Y (zh) 一种氩气提纯装置
CN110548365A (zh) 由含氢气体制备高纯氢气的装置及方法
JP5665120B2 (ja) アルゴンガスの精製方法および精製装置
CN217148577U (zh) 一种从低含氦bog中提取高纯氦气的系统
JPS58159830A (ja) 天然ガス中の炭酸ガスを除去する方法
JP2024517292A (ja) 化学法によるｃｏ２を回収した排ガスから窒素ガスを製造するシステム及び方法
CN110822924B (zh) 一种冷轧罩式炉尾气回收利用方法及其系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21922383

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21922383

Country of ref document: EP

Kind code of ref document: A1