PRODUCTS

SS bag filter housing – single bag side entrance

Zonel Filtech developed the para-aramid filter cloth (Kevlar filter fabric) / filter bags for candle filters which widely used for Raney Nickel collection in reactor for BDO production (ethyne method, as the BDO reactor filter bag or BDO catalyst filter bag) process, etc.

The BDO production process is that acetylene and formaldehyde pass through the catalyst (Raney nickel catalyst) slurry layer in countercurrent, and react at 93°C, 0.1 MPa with the catalyst.
The stirrer and the acetylene gas entering from the lower part of the reactor can keep the catalyst in suspension.

After the generated BYD is separated from the catalyst by the built-in candle filter (adopted the para-aramid / Kevlar filter fabric bag), the catalyst remains in the reactor. And the para-aramid candle filter bag/ Kevlar candle filter bags from Zonel Filtech will be equipped with the relevant candle filters to help finish this processing under the high temperature and high pressure circumstance.

The Reney Nickel catalyst will be collected by filter bags, then the filtered crude BYD will enters the BYD purification unit to remove methanol and formaldehyde, and the purified BYD solution enters the hydrogenation section. BYD hydrogenation is carried out in two fixed-bed reactors connected in series, and 99% of the hydrogenation reaction is completed in the first reactor.

The crude BDO solution after hydrogenation is concentrated and rectified to remove impurities to obtain the BDO product.

The para-aramid filter cloth (Kevlar filter cloth bag) from Zonel Filtech with the properties of high tensile strength, low elongation with stable size, high temperature and abrasion resistance, low heat shrinkage, durable, etc.

Zonel Filtech provide both para-aramid / Kevlar filter fabric roll and ready made candle filter bag, any help needed, just feel free to contact us!