| 摘要 |
A method of separating a mixture of liquid and insoluble solids in a filter press may comprise: pumping the mixture into a chamber between two filter plates in the filter press to form a filter cake, wherein the chamber is lined by filter cloths, and wherein, during the pumping, filtrate is forced through the filter cloths and out of the chamber; heating the filter cake in the chamber, wherein, during the heating, filtrate is forced through the filter cloths and out of the chamber, and wherein the heating is by radio frequency irradiation of the filter cake in the chamber; and releasing dried filter cake from the chamber. A filter press system for separating a mixture of liquid and insoluble solids may comprise: a frame; a plurality of filter plates configured to form a stack of parallel plates, each of the plurality of filter plates being movably attached to the frame, the plurality of filter plates further being configured to form a multiplicity of chambers, each of the multiplicity of chambers being lined by filter cloths, wherein the plurality of filter plates, the multiplicity of chambers and the filter cloths are configured to allow filtrate to escape from the chambers while retaining solids from the mixture to form a filter cake; and a radio frequency heater, for directly heating the filter cake in the multiplicity of chambers. The radio frequency heating may include microwave heating, or dielectric heating by lower frequency radio waves in the range of 1 to 100 MHz. |
| 主权项 |
1. A method of separating a mixture of liquid and insoluble solids in a filter press, said method comprising:
pumping said mixture into a chamber between two filter plates in said filter press to form a filter cake, wherein said chamber is lined by filter cloths, and wherein, during said pumping, filtrate is forced through said filter cloths and out of said chamber; heating said filter cake in said chamber, wherein, during said heating, filtrate is forced through said filter cloths and out of said chamber; and releasing dried filter cake from said chamber; wherein said heating is by radio frequency irradiation of said filter cake in said chamber. |
