Method and device for vacuum impregnation and vacuum predrying of nuclear grade active carbon

A technology of vacuum impregnation and treatment methods, applied in lighting and heating equipment, chemical instruments and methods, drying solid materials, etc., to achieve the effect of ensuring uniformity

Active Publication Date: 2013-06-05
CHINA INST FOR RADIATION PROTECTION
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to address the defects of the existing nuclear-grade activated carbon impregnation process, provide a method and equipment for nuclear-grade activated carbon impregnation and vacuum pre-drying treatment in a vacuum state, improve the uniformity of activated carbon impregnation and drying, improve product quality and Productivity

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  • Method and device for vacuum impregnation and vacuum predrying of nuclear grade active carbon

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Embodiment Construction

[0015] The present invention will be described below with reference to the drawings and specific embodiments.

[0016] Such as figure 1 As shown, the nuclear-grade activated carbon vacuum impregnation and pre-drying treatment equipment provided by the present invention includes a rotatable and rolling vacuum tank 1. The vacuum tank 1 is provided with a spray head 2, which is connected to the dispensing system through a pipeline, The vacuum tank 1 is also connected to a heating system. The vacuum tank 1 has a double-cone structure, the wall of the vacuum tank 1 is provided with an interlayer, and the interlayer is connected to the heating boiler 5 of the heating system through a pipeline. The dispensing system includes a dispensing box 3 and a water pump 4 connected thereto. The immersion liquid in the dispensing box 3 is introduced into the pipeline through the water pump and sprayed out through the spray head 2. A filter screen 6 is provided in the vacuum tank 1, and the vacuu...

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Abstract

The invention relates to a nuclear grade active carbon production device and especially relates to a method and a device for vacuum impregnation and vacuum predrying of nuclear grade active carbon. The method comprises the following steps of putting active carbon into a rotatablely rolling vacuum tank, carrying out atomization and spraying of an impregnation liquid introduced into the vacuum tank on the surface of active carbon rolling ceaselessly by a spraying system, after active carbon impregnation, increasing the pressure in the vacuum tank to ordinary pressure, carrying out vacuum predrying, simultaneously opening a vacuum pump and an oil electric heater, and carrying out vacuum-pumping and heating on the tank body with continuous rotation of the vacuum tank so that active carbon heating is uniform and low-temperature low-pressure evaporation is realized. The device improves a double-cone vacuum rotation tank, utilizes the spraying system to atomize an impregnation agent under pressing conditions so that the atomized impregnation agent contacts with active carbon rolling in vacuum and is fast bound to the active carbon. The device has dual uses, realizes vacuum impregnation and vacuum predrying of active carbon by one step, and has effects of time, manpower and power saving.

Description

Technical field [0001] The invention relates to a nuclear-grade activated carbon production equipment, in particular to a nuclear-grade activated carbon vacuum impregnation and vacuum pre-drying treatment method and equipment. Background technique [0002] In order to ensure the safe operation of the nuclear industry and nuclear power plants, the gas containing radioactive iodine needs to be adsorbed and retained. Nuclear-grade activated carbon is mainly used to purify radioactive iodine in the form of adsorbed gas. The impregnation process is an important part of the nuclear-grade activated carbon production process. [0003] Chromatographic analysis of multiple batches of activated carbon impregnation adsorption on the same impregnation solution showed that in the same impregnation solution, as the number of soaking batches increases, the effective content of the impregnation solution is rapidly decreasing. In the past, the impregnation process of activated carbon adsorbent was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J20/32F26B7/00
Inventor 丘丹圭史英霞侯建荣刘群徐路统李永国孔海霞吴涛韩丽红俞杰
Owner CHINA INST FOR RADIATION PROTECTION
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