Environment-friendly automatic-temperature-control quartz tube furnace device for pyrolysis of high polymer

A high-temperature pyrolysis and polymer technology, which can be used in furnaces, furnace types, chemical/physical processes, etc., and can solve problems such as inaccurate temperature control and uneven temperature in the furnace.

Inactive Publication Date: 2013-04-03
HARBIN UNIV OF COMMERCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of tube furnace is simple in structure and easy to use, but due to the obvious axial heat dissipation, the temperature in the furnace is uneven and the temperature control is not accurate.

Method used

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  • Environment-friendly automatic-temperature-control quartz tube furnace device for pyrolysis of high polymer
  • Environment-friendly automatic-temperature-control quartz tube furnace device for pyrolysis of high polymer
  • Environment-friendly automatic-temperature-control quartz tube furnace device for pyrolysis of high polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1: Preparation of fiber composite polyacene electrode material

[0055] Preparation of pyrolyzed samples: add carbon fiber to thermosetting phenol-formaldehyde resin, bake part of the solvent at 70°C to 80°C, put it in a flat mold, put it into a press head with heating function, and heat up to 90°C at 180°C / hr. Start to pressurize, the pressure is the natural head pressure; continue to rise to 150°C at 120°C / hr, decompress and deflate, and then pressurize to 50kg / cm 2 , solidified at constant temperature for 30 minutes, cooled naturally, and taken out as a cracked sample.

[0056] Pyrolysis process: put the sample prepared in the previous step on the quartz material sample holder 8, and put it into the central pyrolysis constant temperature zone in the middle of the quartz tube furnace 10. As described in the detailed description, after the device is evacuated and filled with nitrogen, the nitrogen flow rate is 0.3 L / min, and the temperature starts to rise. Wh...

Embodiment 2

[0057] Embodiment 2: Preparation of porous polyacene electrode material

[0058] Mix thermosetting phenol-formaldehyde resin (30% by weight), pore forming agent (64% zinc chloride, 6% ammonium chloride) and appropriate amount of ethanol to form a viscous liquid. The remaining steps of sample preparation are the same as in Example 1. The cracking process is also the same as in Example 1, except that the heating process is different. When it is less than 150°C, the heating rate is 160°C / hr; when it is 150°C-300°C, it is 60°C / hr; when it is greater than 300°C, it is 30°C / hr; when it reaches 500°C, keep the constant temperature for 2 hours.

Embodiment 3

[0059] Example 3: Preparation of doped porous polyacene electrode material

[0060] Thermosetting phenol formaldehyde resin (50%), pore forming agent (zinc chloride 50%), and appropriate amount of dopant iron powder and ethanol were made into a viscous liquid, and the rest of the steps of cracking sample preparation were the same as in Example 1. The cracking process is the same as in Example 2, except that a metal sample holder is used, and the temperature is maintained at 600° C. for 3 hours.

[0061] Compared with the cracked material prepared by other methods, the material prepared by this method has the following advantages:

[0062] 1. A very high content of pore-forming agent can be used, and compared with general electrode materials, the prepared material has a much higher specific surface area and a much smaller specific gravity; after doping, the conductivity is improved, so the battery assembled with the prepared electrode has Large specific capacity, specifi...

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Abstract

Tube furnaces for pyrolyzing or sintering are large in axial heat radiation, nonuniform in hearth temperature and low in machining amount. The invention discloses an environment-friendly automatic-temperature-control quartz tube furnace device for pyrolysis of high polymer, wherein the environment-friendly automatic-temperature-control quartz tube furnace device comprises a quartz glass tube furnace, a sample stand, a heat-isolation ventilation assembly, a fireproof heat-insulation furnace body, an automatic-heating temperature control device, a safety protection device and a tail gas treatment device. Different from other tube furnaces, the quartz tube furnace device is characterized in that a furnace body structure is improved by taking heat insulation measures additionally for inner and outer ports of a hearth, the axial-radial ratio of the tube furnace is high up to 12.5, resistance wires are arranged in a nonuniform winding manner and are arranged densely at the ports and sparsely in the middle, in addition, a safety protection bag and a tail gas purification column are arranged, and the furnace is internally vacuumized and is introduced with nitrogen. The environment-friendly automatic-temperature-control quartz tube furnace device disclosed by the invention is simple in equipment, low in investment, good in gas tightness, high in vacuum degree, convenient for heating as well as temperature measuring and controlling, and good in heat insulation effect, and is safe, energy-saving and environment-friendly, and an intra-furnace pyrolysis region is long and uniform in temperature, so that pyrolysis and doping reaction effects are good, and the processing amount is large. The environment-friendly automatic-temperature-control quartz tube furnace device can also be applied to other high-temperature reaction processes.

Description

technical field [0001] The invention relates to an environment-friendly high-temperature pyrolysis equipment for preparing electrode materials, in particular to a device for preparing electrode materials by pyrolyzing high polymers under the condition of high temperature, inert gas or nitrogen protection, and can reduce harmful gases produced. Purified quartz tube furnace device. [0002] Background technique [0003] The study of conductive polymers has always been a research hotspot in the field of electrochemistry of polymer materials. Since the specific gravity of high polymer is much lighter than that of inorganic compounds used in general battery preparation, and it is easy to make a material with a porous structure and thus a huge specific surface area, the battery assembled with the electrode prepared by conductive high polymer has specific capacity, The specific energy is much higher than that of ordinary batteries, and the battery self-discharge is small, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B17/00B01J6/00
Inventor 苏荣军苏钰王军霞梁多平郭城李静春曲洪
Owner HARBIN UNIV OF COMMERCE
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