WO2021047414A1 - Dispositif de condensation à dégivrage automatique rotatif - Google Patents

Dispositif de condensation à dégivrage automatique rotatif Download PDF

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Publication number
WO2021047414A1
WO2021047414A1 PCT/CN2020/112722 CN2020112722W WO2021047414A1 WO 2021047414 A1 WO2021047414 A1 WO 2021047414A1 CN 2020112722 W CN2020112722 W CN 2020112722W WO 2021047414 A1 WO2021047414 A1 WO 2021047414A1
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WO
WIPO (PCT)
Prior art keywords
cooling
processing
cavity
condensation
gas
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Application number
PCT/CN2020/112722
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English (en)
Chinese (zh)
Inventor
胡毅强
Original Assignee
轮通空调节能设备（上海）有限公司
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Application filed by 轮通空调节能设备（上海）有限公司 filed Critical 轮通空调节能设备（上海）有限公司
Publication of WO2021047414A1 publication Critical patent/WO2021047414A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • 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
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the present invention relates to gas purification technology, in particular to the technology of a rotating wheel type self-defrosting and condensing device.
  • VOCs Emissions of high-concentration volatile organic gases VOCs exist in many aspects of industrial processes, such as tank farm oil and gas, refined oil loading and unloading, chemical production process emissions, and so on.
  • Condensation method is a common method to deal with high-concentration VOCs emissions. It can not only solve the problem of VOCs pollution, but also recover a large amount of high-value organic matter, which is economical.
  • the existing defrosting method is basically switched by dual condensers, using the heat of the self-processed gas or the heat of the refrigerant vapor from the compressor outlet to defrost.
  • the entire equipment is bulky, and the system is complicated and difficult to control. , Low reliability, long defrost cycle, and can’t adapt to changes in waste gas composition, concentration, flow, etc. in the treatment gas.
  • the technical problem to be solved by the present invention is to provide a rotary self-defrosting condensing device with small size, simple structure, high reliability, and short defrosting period.
  • the present invention provides a wheel-type self-defrosting condensing device, which is characterized in that it includes a chassis, and a wheel-type condensing core installed in the chassis, and used to drive the condensing core to rotate The runner drive motor;
  • the left part of the cabinet is the cooling side
  • the right part is the processing side
  • the cooling side of the cabinet is formed with a first cooling cavity and a second cooling cavity
  • the processing side of the cabinet is formed with a first processing cavity and a second processing cavity;
  • the condensation core is formed with a plurality of condensation passages that pass through from top to bottom, and each condensation passage can move back and forth between the cooling side and the processing side of the case along with the rotation of the condensation core;
  • the first cooling cavity is provided with a cooling air inlet
  • the second cooling cavity is provided with a cooling air outlet
  • the first cooling cavity is communicated with the second cooling cavity through a condensation channel located on the cooling side of the chassis;
  • the first processing chamber and the second processing chamber are divided into N mutually separated processing areas in sequence from front to back along the forward rotation direction of the condensing core;
  • the j-th processing area from the front in the first processing chamber and the j-th processing area from the front in the second processing chamber are connected to each other through a condensation channel located on the processing side of the chassis;
  • the first k-th processing zone in the second processing chamber and the first k+1-th processing zone in the first processing chamber are connected to each other through an interval connecting pipe, and the pipe port of the interval connecting pipe is provided with gas and liquid Splitter;
  • the first processing zone from the front of the first processing chamber is provided with a processing gas inlet, and the N-th processing zone from the front of the second processing chamber is provided with a processing gas outlet.
  • it also includes a liquid storage tank, a cooling fan, a post-cooling heat exchanger, and a process intake air pre-cooler for cooling the gas;
  • the low-temperature side air inlet of the after-cooling heat exchanger is connected to the processing gas outlet of the Nth processing zone from the front of the second processing chamber, and the low-temperature side air outlet of the after-cooling heat exchanger is connected to the processing gas discharge point.
  • the high-temperature side air outlet of the cold heat exchanger is connected to the cooling air inlet of the first cooling chamber, the high-temperature side air inlet of the after-cooling heat exchanger is connected to the air outlet of the cooling fan, and the air inlet of the cooling fan is connected to the second cooling The cooling air outlet of the cavity;
  • the air outlet of the process intake air precooler is connected to the process gas inlet of the first processing zone from the front of the first processing chamber, and the air inlet of the process intake air precooler is connected to the process gas source;
  • each gas-liquid separator in the cabinet is connected to the liquid inlet of the liquid storage tank through a valve.
  • liquid nitrogen spray pipe for spraying liquid nitrogen into the first cooling cavity is provided on the cabinet.
  • a pressure relief valve is provided on the connecting pipe between the air inlet of the cooling fan and the cooling air outlet of the second cooling cavity.
  • the wheel type self-defrosting condensing device uses the condensing channel of the wheel type condensing core to move back and forth on the cooling side and the processing side to reduce the temperature of the condensing channel, and by designing multiple processing zones on the processing side, the processing The air flows up and down through the condensing channel, and during processing, the temperature of each condensing channel increases step by step, thereby avoiding the trouble of frosting and defrosting, and realizing the self-defrosting function. Its structure is simple, and its volume is small. And it has high reliability and short defrost cycle.
  • Fig. 1 is a schematic structural diagram of a case after a partial section of a rotary wheel-type self-defrosting and condensing device according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the internal structure of the chassis in the wheel-type self-defrosting and condensing device of the embodiment of the present invention
  • Fig. 3 is a schematic structural diagram of a rotary self-defrosting and condensing device according to an embodiment of the present invention.
  • a rotary self-defrosting condensing device provided by an embodiment of the present invention is characterized in that it includes a chassis 1 and a rotary condensing core 2 installed in the chassis, and A wheel drive motor 3 for driving the rotation of the condensation core;
  • the left part of the cabinet 1 is the cooling side, and the right part is the processing side.
  • the cooling side of the cabinet is formed with a first cooling cavity 4 and a second cooling cavity 5, and the processing side of the cabinet is formed with a first processing cavity and a second processing cavity. ;
  • the condensation core 2 is formed with a plurality of condensation passages that pass through up and down, and each condensation passage can move back and forth between the cooling side and the processing side of the case as the condensation core rotates;
  • the first cooling cavity 4 is provided with a cooling air inlet
  • the second cooling cavity 5 is provided with a cooling air outlet
  • the first cooling cavity 4 is in communication with the second cooling cavity 5 through a condensation channel located on the cooling side of the chassis;
  • the second processing chamber is divided into N mutually separated processing areas 7 from front to back along the forward rotation direction of the condensation core 2;
  • the j-th processing zone 6 from the front in the first processing chamber and the j-th processing zone 7 from the front in the second processing chamber are connected to each other through a condensation channel located on the processing side of the chassis;
  • the first k-th processing area 6 in the second processing chamber and the first k+1-th processing area 7 in the first processing chamber are connected to each other through an interval connecting pipe 8, and the pipe mouth of the pipe 8 is connected in the interval Equipped with a gas-liquid separator (not shown in the figure);
  • the first processing zone 6 from the front of the first processing chamber is provided with a processing gas inlet
  • the N-th processing zone 7 from the front of the second processing chamber is provided with a processing gas outlet.
  • the embodiment of the present invention is used to process high-concentration volatile organic gas VOCs, and its working principle is as follows:
  • the wheel drive motor drives the condensing core to rotate slowly.
  • the low-temperature cooling air is introduced into the first cooling cavity through the cooling air inlet, and then flows through the condensation channel on the cooling side of the chassis to enter the second cooling cavity, and then is discharged from the cooling air outlet. In this process, the low-temperature cooling air will cool down the condensation channel on the cooling side of the chassis;
  • the cooled condensing channel is transferred to the treatment side along with the condensing core body, and passes through each treatment zone of the first treatment chamber and the second treatment chamber in sequence;
  • the treatment gas (to-be-treated exhaust gas containing high concentration of VOCs) first enters the first treatment zone of the first treatment chamber through the treatment gas inlet, and then flows through the The condensing channel at the treatment zone enters the first treatment zone of the second treatment chamber, and then enters the second treatment zone of the first treatment chamber through the first section connecting pipe, and then passes through the condensing channel in sequence according to similar flow routes ,
  • condensation The rotation direction of the core body is opposite to the flow direction of the processing gas, forming a counter-current arrangement.
  • the gas-liquid separation function of the gas-liquid separators connected to the pipe ports in each section can effectively filter the liquid droplets contained in the processing gas;
  • the VOCs in the processing gas condense to form a thin liquid film of organic solvent on the surface of the condensation channel.
  • the higher organic components begin to frost on the surface of the condensation channel, and the condensation channel will quickly transfer to the next treatment zone with a higher temperature with the condensation core, and defrost under the higher temperature processing gas to realize the self-defrosting function. ;
  • the cooling capacity of the cooling gas can come from direct evaporation and gasification of liquid nitrogen, low-temperature compression refrigeration systems, or from waste cooling such as LNG vaporization.
  • the embodiment of the present invention further includes a liquid storage tank 12, a cooling fan 14, a post-cooling heat exchanger 10, and a process intake air pre-cooler 11 for cooling the gas;
  • the air outlet of the process intake air precooler 11 is connected to the process gas inlet of the first processing zone 6 from the front of the first processing chamber, and the air inlet of the process air intake precooler 11 is connected to the process gas source;
  • the processed intake air pre-cooler 11 is an existing technology, which is used to perform pre-cooling treatment on the processed gas to improve the processing efficiency of the processed gas;
  • each gas-liquid separator in the case 1 is connected to the liquid inlet of the liquid storage tank 12 through a valve 13, and the case 1 is provided with liquid nitrogen for injecting liquid nitrogen into the first cooling chamber 4 Nozzle 9; the liquid nitrogen nozzle is used to add cold to the cooling side of the chassis;
  • the low-temperature side air inlet of the after-cooling heat exchanger 10 is connected to the processing gas outlet of the N-th processing zone 7 from the front of the second processing chamber, and the low-temperature side air outlet of the after-cooling heat exchanger 10 is connected to the processing gas discharge Point, the high-temperature side air outlet of the after-cooling heat exchanger 10 is connected to the cooling air inlet of the first cooling chamber 4, the high-temperature side air inlet of the after-cooling heat exchanger 10 is connected to the air outlet of the cooling fan 14, and the cooling fan 14
  • the air inlet is connected to the cooling air outlet of the second cooling cavity 5, and a pressure relief valve 15 is provided on the connecting pipe between the air inlet of the cooling fan and the cooling air outlet of the second cooling cavity;
  • the processing gas After the processing gas passes through the processing zones of the first processing chamber and the second processing chamber in the chassis, it absorbs a large amount of cold energy, and after it is introduced into the post-cooling heat exchanger 10, it can exchange with the cooling gas discharged from the second cooling chamber Heat, refrigerate the cooling air discharged from the second cooling cavity to make full use of energy.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

Un dispositif de condensation à dégivrage automatique rotatif, se rapportant au domaine technique de la purification de gaz, et résolvant le problème technique dans lequel des dispositifs de condensation existants deviennent facilement givrés. Le dispositif comprend un boîtier, un corps à noyau de condensation rotatif monté dans le boîtier, et un moteur d'entraînement de roue rotative pour entraîner le corps à noyau de condensation en rotation. Une première cavité de refroidissement et une seconde cavité de refroidissement sont définies au niveau d'un côté de refroidissement du boîtier. Une première cavité de traitement et une seconde cavité de traitement sont définies au niveau d'un côté traitement du boîtier. De multiples canaux traversants de condensation verticaux sont formés sur le corps à noyau de condensation. La première cavité de refroidissement communique avec la seconde cavité de refroidissement au moyen du canal traversant de condensation situé sur le côté refroidissement du boîtier. La première cavité de traitement et la seconde cavité de traitement sont chacune divisées en N régions de traitement mutuellement séparées de l'avant en arrière dans une direction de rotation vers l'avant du corps à noyau de condensation. Les régions de traitement dans la première cavité de traitement et la seconde cavité de traitement communiquent séquentiellement l'une avec l'autre au moyen du canal traversant de condensation situé sur le côté traitement du boîtier et d'un tuyau de raccordement de section. Le dispositif selon l'invention est destiné à éliminer les VOCs d'un gaz organique.
PCT/CN2020/112722 2019-09-09 2020-08-31 Dispositif de condensation à dégivrage automatique rotatif WO2021047414A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201921520763 2019-09-09
CN201910864882.9 2019-09-09
CN201921520763.3 2019-09-09
CN201910864882 2019-09-09

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WO2021047414A1 true WO2021047414A1 (fr) 2021-03-18

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4333792C2 (de) * 1993-10-04 1996-08-22 Detlef Dr Stritzke Verfahren und Vorrichtung zur Reinigung der Abluft aus Fertigungsanlagen der Gummi- und Kautschukindustrie
CN104606915A (zh) * 2015-02-09 2015-05-13 南京工业大学 一种高效低成本的voc回收系统及方法
CN104857735A (zh) * 2015-05-29 2015-08-26 南京都乐制冷设备有限公司 一种VOCs气体的冷凝吸附回收装置
CN109550350A (zh) * 2018-12-03 2019-04-02 胜利油田森诺胜利工程有限公司 一种液氮低温冷凝voc回收处理装置
CN110508090A (zh) * 2019-09-09 2019-11-29 轮通空调节能设备（上海）有限公司 转轮式自除霜冷凝装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4333792C2 (de) * 1993-10-04 1996-08-22 Detlef Dr Stritzke Verfahren und Vorrichtung zur Reinigung der Abluft aus Fertigungsanlagen der Gummi- und Kautschukindustrie
CN104606915A (zh) * 2015-02-09 2015-05-13 南京工业大学 一种高效低成本的voc回收系统及方法
CN104857735A (zh) * 2015-05-29 2015-08-26 南京都乐制冷设备有限公司 一种VOCs气体的冷凝吸附回收装置
CN109550350A (zh) * 2018-12-03 2019-04-02 胜利油田森诺胜利工程有限公司 一种液氮低温冷凝voc回收处理装置
CN110508090A (zh) * 2019-09-09 2019-11-29 轮通空调节能设备（上海）有限公司 转轮式自除霜冷凝装置

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