沸石乾燥箱

SSC-15沸石乾燥箱是為電力公司和天然氣加工廠準備的。它被設計用來對用於燃料油和天然氣深度脫水的沸石進行預乾燥。

沸石是微孔鋁矽酸鹽，也被稱為「選擇性吸附劑」，因為與其它吸附劑不同，它們可以選擇性地吸附分子。出於這個原因，它們也被稱為「分子篩」。沸石晶體上有50%的通道和空腔。因此，它們具有很高的吸附能力。沸石是比矽膠或活性氧化鋁更有效的乾燥劑。

沸石最重要的特點之一是其對低濕度液體的除濕能力。沸石比其他吸附劑更耐高溫。

在電力工業中，沸石被用來對石油進行脫水。在天然氣工業中，它們被推薦用於空氣乾燥過濾器和氫冷式發電機。在許多情況下，通過用沸石代替通常的吸附劑，可以省略脫水氣體的冷卻階段，從而減少能源消耗並簡化處理程序。

沸石的特點是其高吸濕率。在整個過程中保持了大幅提高的脫水率。最終的水份含量突然快速增加，而不是逐漸增加。因此，沸石的全部吸附能力可以得到利用。

沸石的初步脫水是使用沸石乾燥箱進行的。這種脫水可以提高沸石的吸附性能。這種乾燥箱也可用於乾燥電極。

沸石乾燥箱是為在以下需求使用而設計的：

• 外部溫度0至35ºС。
• 大氣壓力630至800 mmHg（Torr）。

乾燥箱的外殼是由鋼板製成的。內部有一個乾燥腔室。兩個加熱裝置安裝在該乾燥室的兩邊。在背板上有一個風扇，是為了讓電加熱器的氣流通過側板上的小孔進入腔室內。為了減少熱損失，外殼是熱絕緣的。

沸石的乾燥過程是由一個模組化的控制單元所執行，該控制單元的裝置式是被放置在乾燥箱外部的一側。

優勢

• 加熱溫度提高到400 ºС。
• 自動溫度控制± 9 ºС。
• 門上有一個螺旋鎖緊裝置，以提高密封性。
• 方便的設計允許移除內裝托盤，從而使乾燥箱有可能用於其它任務：加熱、硬化和烘烤。

根據客戶的需要和應用，乾燥箱可以配備：

• 可選用加熱元件，最高可達800ºС，用以擴大乾燥箱的應用範圍。
• 自動門控制，防止乾燥箱的門打開，直到它冷卻下來。保護操作者不被燙傷。

SSC-15 cabinet is for electric power utilities and gas processing plants. This device is designed for preliminary drying zeolite, used for deep dehydration of fuel oils and natural gas.

Zeolite is microporous aluminosilicate – which differs from other adsorbents because it can  selectively adsorb molecules. That’s why it is also called a “molecular-sieve”. Zeolite crystal is covered in channels and cavities in 50% . Owing to this they have a high adsorptive capacity. Zeolite is a very effective drier, better than silica gels and active aluminum oxide.

One of the most important zeolite features is its ability to dehumidify liquids with low moisture content. Zeolite has a higher heat resistance compared to other sorbents.

In electric power industry zeolite is used for oils dehydration. It is recommended for air-drying filters and hydrogen cooled generators in gas industry. In many cases – the possibility to substitute usual sorbents with zeolite allows to avoid the`cooling stage of dehydrated gas and consequently to reduce energy consumption and simplify the process.

Zeolite is characterized by a high speed of moisture absorption. A high dehydration  is maintained practically during the whole process. Moisture content at the end is increasing not gradually, but suddenly and quickly. So it is possible to use zeolite adsorptive capacity to the full extent.

Preliminary zeolite dehydration is performed with the help of Zeolite drying cabinet-15. This dehydration helps to improve adsorptive features of zeolite. Besides, this cabinet can be used for  drying electrodes as well.

Zeolite drying cabinet 15 is designed for usage at:

• outside temperature 0 to 35ºС;
• atmospheric pressure 630 to 800 mm of mercury (Torr).

The casing of the cabinet is made of sheet steel. The cabinet has a drying chamber. Two heating units are installed at both sides of this drying chamber. At the back panel there is a fan, designed for the airflow in the chamber from electrical heaters through the holes located at the side panels. In order to reduce heat loss the casing is heat-insulated.

Zeolite drying process is controlled by a modular-packaged unit, which is placed on the wall near the drying box.

Advantages

• heating temperature increased to 400ºС;
• automatic temperature control ± 9 ºС;
• a door screw lock available to improve hermetization;
• Convenient design allows to remove trays, thereby making it possible to use the cabinet for other tasks : heating, hardening and baking.

At the customer’s needs and requirements the drier can be equipped with:

• Heating elements up to 800ºС, allowing to extend the range of chamber application;
• automatic door control, preventing the dryer door opening until it cools down. Protecting the staff from getting burns.