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WO2015013990A1 - Procédé et appareil pour séchage et distillation à sec ou pyrolyse, dans lesquels la majorité de la chaleur de vaporisation peut être recyclée - Google Patents

Procédé et appareil pour séchage et distillation à sec ou pyrolyse, dans lesquels la majorité de la chaleur de vaporisation peut être recyclée Download PDF

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Publication number
WO2015013990A1
WO2015013990A1 PCT/CN2013/081037 CN2013081037W WO2015013990A1 WO 2015013990 A1 WO2015013990 A1 WO 2015013990A1 CN 2013081037 W CN2013081037 W CN 2013081037W WO 2015013990 A1 WO2015013990 A1 WO 2015013990A1
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WIPO (PCT)
Prior art keywords
heating
drying
pyrolysis
retorting
channel
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2013/081037
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English (en)
Chinese (zh)
Inventor
蔡京鹏
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Individual
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Individual
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Filing date
Publication date
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Publication of WO2015013990A1 publication Critical patent/WO2015013990A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
    • C10B47/28—Other processes
    • C10B47/32—Other processes in ovens with mechanical conveying means
    • C10B47/46—Other processes in ovens with mechanical conveying means with trucks, containers, or trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/16—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by wheeled trucks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust 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
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the invention relates to the field of drying high-moisture materials such as coal, in particular to the fields of drying, dry distillation or pyrolysis of lignite and low-grade long-flame coal.
  • the present invention provides a drying, retorting or pyrolysis method and apparatus for recycling and utilizing most of the vaporization heat.
  • the water evaporated by the material dried by the method and the device can be mostly discharged in the form of condensed water, and the vaporization heat can be mostly recycled, greatly saving energy and reducing consumption, environmental protection is easy to control, the equipment is simple and low in cost, and is easy to mass-produce.
  • a method for drying, retorting or pyrolysis in which most of the vaporization heat can be recycled characterized in that: the specific implementation steps of the method are as follows: 1 charging: loading the materials into a plurality of metal material tubes on the loading vehicle; Feeding: The loading of the loading vehicle enters from the inlet end of the heating channel at a set speed or intermittently.
  • the heating channel adopts a heating device of indirect heat conduction or radiation heat transfer, and is provided with a low temperature preheating section and a high temperature.
  • the preheating can be controlled by setting the length of the low temperature preheating section and controlling the traveling speed of the loading vehicle Hot time to achieve the best effect of steam and exhaust cooling and condensation;
  • the heating time can be adjusted by setting the length of the high temperature heating section and controlling the travel speed of the loading vehicle, and by adjusting the indirect heat conduction or radiation in the heating channel
  • the heating device for heat transfer adjusts the heating temperature to achieve the desired drying, retorting or pyrolysis effect; 4 the material after drying or low temperature retorting is sent out from the outlet end of the heating channel by the charging vehicle .
  • the material is sent out from the outlet end of the heating channel by the charging vehicle, and can be continuously or intermittently fed into a subsequent independent heating channel, and reheated in the independent heating channel for retorting.
  • pyrolysis, dry distillation, pyrolysis of gaseous products are collected and separated, solid products are left in the loading vehicle; steam generated by the indirect heat conduction or radiation heat transfer heating device in the independent heating channel is recovered to any of the preceding heating channels Medium; the material that has been retorted and pyrolyzed by the independent heating channel is cooled after unloading or unloading and then cooling.
  • a drying, retorting or pyrolysis device in which the heat of vaporization can be mostly recycled.
  • the device comprises one or more heating channels connected in series, and a heating device for indirect heat conduction or radiation heat transfer is arranged in the heating channel.
  • the heating channel has a cylindrical shape.
  • At least one end of the heating passage is provided with an airflow blocking device.
  • the heating channel includes an independent heating channel, the independent heating channel is provided with more than one gaseous product discharge port, and the gaseous product discharge port collects the gaseous state generated by dry distillation or pyrolysis in the independent heating channel through an external processing device. product.
  • the independent heating passage is provided with more than one steam discharge port, and the steam discharge port passes through a steam pipe to recover steam generated by the heating device in the independent heating passage to any of the preceding heating passages.
  • the steam generated by the dried material and the steam used as the heat source are discharged in the form of condensed water, and most of the vaporization heat is recovered, which greatly saves the heat energy required for drying/dry distillation/pyrolysis.
  • the heating process material can be installed in the metal material tube, which can not only isolate the air, but also can make the gas generated by the heat source not directly contact with the processed material, and it is easy to control the processing effect and the quality of the product. Ensure production safety and material safety.
  • the heat source device of the invention adopts a heating device of indirect heat conduction or radiation heat transfer, and the environment is easy to control.
  • Figure 1 is a schematic cross-sectional view showing the drying, retorting or pyrolysis apparatus of the present invention
  • FIG. 2 is a schematic structural view of a normal heating passage of the present invention
  • Figure 3 is a schematic structural view of an independent heating passage of the present invention.
  • Figure 4 is a schematic view showing the structure of the drying, retorting or pyrolysis apparatus of the present invention.
  • drying or low-temperature dry distillation lignite or low-grade long-flame coal as an example, the method of drying or low-temperature dry distillation using the above device is specifically described. The steps are as follows:
  • the materials are loaded into a plurality of metal material tubes 2 on the loading cart 1, and a certain interval is left between the metal material tubes 2.
  • the loading and unloading loading vehicle 1 enters from the inlet end of the normal heating passage 3 at a set speed or intermittently.
  • the normal heating passage 3 is provided with a low temperature preheating section and a high temperature heating section, and the normal heating passage is provided.
  • the indirect heat conduction or radiation heat transfer heating device is arranged in the high temperature heating section, and the charging cart 1 is moved from the low temperature preheating section 34 to the outlet end through the high temperature heating section 35;
  • Drying, dry distillation or pyrolysis After the material enters the normal heating channel 1 in the charging cart 1, the water in the low temperature preheating section 34 contacts the exhaust gas generated by the high temperature heating section 35 or other exhaust gas that has carried a certain thermal energy, and the material is pre-treated. The heat is even partially dried. The water vapor or other exhaust gas generated by the high temperature heating section 35 releases a large amount of heat energy in the low temperature preheating section 34, and the temperature itself is greatly lowered, and the steam is condensed into water and discharged.
  • the preheating time can be controlled by setting the length of the low temperature preheating section 34 and controlling the traveling speed of the loading cart 1 to achieve the best effect of steam and exhaust gas cooling and condensation.
  • the loading cart 1 advances to the high temperature heating section 35 and receives the heating and channel walls of the indirect or radiative heat transfer and the radiation and heat conduction generated by the other simultaneously heated facilities in the channel.
  • the heating time can be adjusted by setting the length of the high temperature heating section 35 and controlling the traveling speed of the loading cart 1, and the heating means in the normal heating channel 1 can also be adjusted to adjust the heating temperature to achieve the desired drying, retorting or Pyrolysis effect.
  • the outlet end of the normal heating channel 1 is provided with an airflow blocking device.
  • the steam or tail gas generated by drying, retorting or pyrolysis is mostly moved to the low temperature preheating section 34, and the condensed water or low temperature tail gas generated by the sufficient heat exchange with the lower temperature material of the low temperature preheating section 34 is respectively The condensed water discharge port 33 and the exhaust tail water discharge hole 32 are discharged.
  • the material is sent from the outlet end of the normal heating channel 3 through the charging cart 1 and can be continuously or intermittently fed into a subsequent independent heating channel 4, and then in the independent heating channel 4
  • the gas product is subjected to dry distillation, pyrolysis, dry distillation and pyrolysis, and the solid product (brown coal semi-coke 9) is left in the charging cart 1; the steam generated by the heating device in the independent heating channel 4 passes through the steam pipe 7 Recovered into any of the preceding normal heating channels 3.
  • the material that has been retorted and pyrolyzed by the independent heating channel 4 is cooled after unloading or unloading and then cooling.
  • the drying, retorting or pyrolysis apparatus involved in the above-mentioned drying, retorting or pyrolysis method in which the heat of vaporization can be largely recovered is as shown in FIG. 1 , and the apparatus comprises one or more cylindrical heating channels connected in series. That is, the cross section is circular. A heating device for indirect heat conduction or radiation heat transfer is disposed in the cylindrical heating passage.
  • a charging cart 1 and a metal tube 2 are disposed in the heating passage shown in FIG.
  • the metal material tube 2 has a cylindrical shape or a square column shape, and may be one or a plurality of intervals installed on each loading cart 1 to accompany the loading vehicle 1 In one piece, there is a certain gap between the metal tube 2 to facilitate ventilation.
  • the loading cart 1 is controllable in speed and is provided in plurality. The loading cart 1 is moved from the inlet end to the outlet end of the heating passage and installed in the cylindrical heating passage.
  • the loading cart 1 can be slid on a track provided in the heating passage by a driving device such as a tractor or a top vehicle at a set speed.
  • the heating channel of the present invention includes one or more normal heating channels 3 and an independent heating channel 4 that is connected in series after the last normal heating channel.
  • the normal heating channel 3 and the independent heating channel 4 are respectively provided with heating devices for indirect heat conduction or radiation heat transfer.
  • the top or side of the normal heating channel 3 shown in FIG. 2 is provided with one or more exhaust tail water discharge ports 32 connected to the external tail gas tail water treatment device 51, and one or more external condensate treatment devices are connected at the bottom. Condensate discharge port 33 of 52.
  • the normal heating passage 3 is a heat insulating space from a feeding end to a discharging end from a low temperature to a high temperature. That is, the feed end of the normal heating passage 3 is the low temperature preheating section 34, and the discharge end of the normal heating passage 3 is the high temperature heating section 35.
  • At least one end of the normal heating passage 3 is provided with an airflow blocking device.
  • the airflow blocking device is disposed at the discharge end of the normal heating passage 3.
  • the airflow blocking device is a device for closing the airflow in the air curtain or other blocking normal heating channel 3 to prevent or reduce the water vapor or other gas generated in the heating channel from being discharged from the discharge end of the normal heating channel 3.
  • the top or side of the independent heating channel 4 as shown in Figure 3 is provided with one or more gaseous product vents 42 for collecting the gaseous state produced by dry distillation or pyrolysis by an external processing device (collection and separation device 6 of the gaseous product).
  • the product is used to provide other equipment.
  • the indirect or radiant heat transfer heating means provided in the independent heating channel 4 can heat the material in the channel to the temperature required for dry distillation/pyrolysis.
  • the independent heating channel 4 is provided with more than one steam discharge port, and the steam discharge port passes through a steam pipe 7 to recover the steam generated by the indirect heat conduction or radiation heat transfer heating device in the independent heating channel 4 to any of the preceding normal states. Heating in channel 3.
  • the inlet end and the outlet end of the independent heating channel 4 are respectively provided with airflow blocking devices 43, 44, and the airflow blocking devices 43 and 44 are devices for closing the air curtain or sealing a large amount of airflow in the independent heating channel 3 to The water vapor or other gas generated in the heating passage is prevented or reduced from being discharged from the inlet end and the outlet end of the independent heating passage 4.
  • the heat source device of the present invention adopts a heating device for indirect heat conduction or radiation heat transfer
  • the heating device for indirect heat conduction or radiation heat transfer comprises a low pressure superheated steam generator 8 disposed in the normal heating channel 3 and the outer portion of the independent heating channel, and
  • the superheated steam heat pipes 31, 41 inside the normal heating passage 3 and the independent heating passage 4 are respectively disposed.
  • the superheated steam heat pipe 31 in the normal heating passage 3 is disposed at the high temperature heating section 35 of the normal heating passage 3.
  • the superheated steam heat pipe 41 in the independent heating passage 4 is uniformly distributed throughout the independent heating passage 4.
  • the heating device for indirect heat conduction or radiation heat transfer may further be an electromagnetic radiation heating device, a resistance wire heating device, or a hot air generator disposed in the normal heating channel 3 and the outer part of the independent heating channel, and respectively set the normal heating.
  • a heating device consisting of a hot air duct inside the channel 3 and the independent heating channel 4.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

La présente invention porte sur un procédé et sur un appareil pour le séchage et la distillation à sec ou la pyrolyse, dans lesquels la majorité de la chaleur de vaporisation peut être recyclée; un véhicule de chargement entre dans un canal de chauffage ayant un appareil de chauffage utilisant une conduction de chaleur indirecte ou un transfert de chaleur par rayonnement, ledit canal comportant également un étage de préchauffage à basse température et un étage de chauffage à haute température. Par l'établissement de la longueur de l'étage de chauffage à basse température et de l'étage de chauffage à haute température, la commande de la vitesse de déplacement du véhicule de chargement, et le réglage de l'appareil de conduction de chaleur indirecte ou de transfert de chaleur par rayonnement, des résultats optimaux sont obtenus dans le refroidissement et la condensation de vapeur et de gaz d'échappement, et le séchage et la distillation à sec ou la pyrolyse. Un matériau qui a subi un séchage ou une distillation à sec à basse température peut être introduit de façon continue ou par intermittence dans un canal de chauffage indépendant, puis chauffé, distillé à sec et pyrolysé. Les produits gazeux du canal de chauffage indépendant sont collectés, séparés et traités; la vapeur produite par l'appareil de chauffage utilisant une conduction de chaleur indirecte ou un transfert de chaleur par rayonnement est recyclée vers l'un quelconque des canaux de chauffage précédents. Le procédé et l'appareil permettent une économie d'énergie et une réduction de consommation substantielles, sont écologiques et faciles à commander, et l'équipement est simple et peu coûteux à fabriquer, et peut être produit facilement à une grande échelle.
PCT/CN2013/081037 2013-07-29 2013-08-08 Procédé et appareil pour séchage et distillation à sec ou pyrolyse, dans lesquels la majorité de la chaleur de vaporisation peut être recyclée Ceased WO2015013990A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310322994.4 2013-07-29
CN201310322994.4A CN103398548B (zh) 2013-07-29 2013-07-29 一种汽化热可大部回收利用的烘干、干馏或热解方法及装置

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WO (1) WO2015013990A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020061435A1 (fr) 2018-09-21 2020-03-26 Enanta Pharmaceuticals, Inc. Hétérocycles fonctionnalisés utiles en tant qu'agents antiviraux

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CN201974020U (zh) * 2011-01-11 2011-09-14 锡林浩特国能能源科技有限公司 褐煤干燥用隧道窑
CN103060048A (zh) * 2013-01-11 2013-04-24 蔡京鹏 一种褐煤的颗粒及粉煤造粒后的烘干方法及烘干设备
CN103146409A (zh) * 2013-03-13 2013-06-12 蔡京鹏 一种蒸汽导热的褐煤烘干/低温干馏方法
CN103242876A (zh) * 2013-04-28 2013-08-14 蔡京鹏 一种褐煤或低变质长焰煤的烘干或低温干馏方法及装置
CN203432211U (zh) * 2013-07-29 2014-02-12 蔡京鹏 一种汽化热可大部回收利用的烘干、干馏或热解装置

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CN201764794U (zh) * 2010-07-27 2011-03-16 浙江省丽水市浙南蓄电池隔板有限公司 热风回馈微波干燥设备
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Publication number Priority date Publication date Assignee Title
CN201974020U (zh) * 2011-01-11 2011-09-14 锡林浩特国能能源科技有限公司 褐煤干燥用隧道窑
CN103060048A (zh) * 2013-01-11 2013-04-24 蔡京鹏 一种褐煤的颗粒及粉煤造粒后的烘干方法及烘干设备
CN103146409A (zh) * 2013-03-13 2013-06-12 蔡京鹏 一种蒸汽导热的褐煤烘干/低温干馏方法
CN103242876A (zh) * 2013-04-28 2013-08-14 蔡京鹏 一种褐煤或低变质长焰煤的烘干或低温干馏方法及装置
CN203432211U (zh) * 2013-07-29 2014-02-12 蔡京鹏 一种汽化热可大部回收利用的烘干、干馏或热解装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020061435A1 (fr) 2018-09-21 2020-03-26 Enanta Pharmaceuticals, Inc. Hétérocycles fonctionnalisés utiles en tant qu'agents antiviraux

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CN103398548A (zh) 2013-11-20

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