초록 ▼

A process for removing catalyst fines from the wax product produced in a slurry Fischer-Tropsch reactor comprises removing the wax product from the reactor and separating the catalyst fines by passing the wax product through a high gradient magnetic field, whereby the catalyst fines are held by a ma

A process for removing catalyst fines from the wax product produced in a slurry Fischer-Tropsch reactor comprises removing the wax product from the reactor and separating the catalyst fines by passing the wax product through a high gradient magnetic field, whereby the catalyst fines are held by a magnetized filter element and the wax product passes through unhindered to form a purified wax product which is ready for upgrading. The separated catalyst fines are returned to the reactor by backwashing the filter element.

대표청구항 ▼

In an improved process for converting synthesis gas comprising hydrogen and carbon monoxide to hydrocarbons by means of a slurry Fischer-Tropsch synthesis wherein a catalyst having activity for reducing carbon monoxide is dispersed in a liquid to form a slurry in a reaction zone and a wax product is

In an improved process for converting synthesis gas comprising hydrogen and carbon monoxide to hydrocarbons by means of a slurry Fischer-Tropsch synthesis wherein a catalyst having activity for reducing carbon monoxide is dispersed in a liquid to form a slurry in a reaction zone and a wax product is produced by said synthesis in said reaction zone, said wax product having magnetic catalyst fines contained therein, the improvement comprising: removing said wax product from said slurry and passing said removed wax product through high magnetic field gradients, said high magnetic field gradients being produced by a magnetic filter element placed between the poles of a magnet, said wax product being passed through said filter element, whereby said catalyst fines are held by said magnetic field gradients and separated from said wax product to yield a purified wax product and separated catalyst fines, turning off said magnetic field, and backwashing said filter element with a portion of said purified wax product to return said catalyst fines to said slurry in said reaction zone, whereby the ratio of catalyst-to-slurry is maintained substantially constant.