Systems and methods for feeding inlet materials to a process system

A feeding system for feeding an inlet material to a process system, comprising:

• a material vessel configured to receive the inlet material;
• a circulation loop for circulating an inlet material flow comprising at least the inlet material, wherein the circulation loop comprises:
• a flow force unit configured to cause the inlet material flow;
• a valve system configured to be fluidly connected to a process system inlet of the process system, wherein the valve system has at least:
• a first position for circulating the inlet material flow in the circulation loop;
• and
• a second position for guiding the inlet material flow to the process system inlet;
• a pressure force unit configured to increase a pressure of the inlet material flow, wherein the pressure force unit is arranged upstream of the valve system;
• and
• an upstream control valve configured to subject the inlet material flow to a pressure-drop, wherein the upstream pressure valve is arranged upstream of the valve system;
• a control unit configured to control flow force unit, the valve system, the pressure force unit, and the upstream pressure control unit, wherein the control unit is configured to control a start-up of the feeding system by:
• starting the flow force unit for circulating the inlet material flow in the circulation loop, while the valve system is arranged in the first position;
• control the pressure force unit to increase the pressure of the inlet material flow;
• control the upstream control valve to subject the inlet material flow to a first pressure-drop;
• when the inlet material flow is circulating, arrange the valve system in the second position;
• after the valve system has been arranged in the second position, control the upstream control valve to subject the inlet material flow to a second pressure-drop, wherein the first pressure-drop is greater than the second pressure-drop.