A system for removing sulfur compounds from a sulfur-containing gas stream, comprising: an absorber, comprising: a gas inlet for receiving the sulfur-containing gas stream; a liquid inlet for receiving an absorption solution comprising a metal cation; an absorption column chamber for allowing contact of the sulfur-containing gas stream and the absorption solution, such that the metal cation reacts with the sulfur compound to form a metal sulphide precipitate and/or a metal mercaptide precipitate, thereby producing a sulfur-depleted gas stream and a precipitate-enriched solution; an accumulation chamber provided at a downstream end of the absorption chamber with respect to flow of the absorption solution, configured to receive and accumulate the precipitate-enriched solution, the accumulation chamber having a greater diameter than the absorption column chamber; a gas outlet for releasing the sulfur-depleted gas stream; and a liquid outlet provided in fluid communication with the accumulation chamber for releasing the precipitate-enriched solution; and a recycle system in fluid communication with the liquid outlet and the liquid inlet for recycling a stream derived from at least a portion of the precipitate-enriched solution back as at least part of the absorption solution supplied to the liquid inlet; and a control system configured to monitor and control a concentration of the metal sulphide precipitates present in the absorption solution below a threshold in order to maintain rheological properties of the absorption solution in the absorption column chamber and/or the accumulation chamber, wherein the threshold is 5 wt% or wherein a surface active agent is added to the absorption solution in order to raise the threshold compared to no surface active agent. an absorber, comprising: a gas inlet for receiving the sulfur-containing gas stream; a liquid inlet for receiving an absorption solution comprising a metal cation; an absorption column chamber for allowing contact of the sulfur-containing gas stream and the absorption solution, such that the metal cation reacts with the sulfur compound to form a metal sulphide precipitate and/or a metal mercaptide precipitate, thereby producing a sulfur-depleted gas stream and a precipitate-enriched solution; an accumulation chamber provided at a downstream end of the absorption chamber with respect to flow of the absorption solution, configured to receive and accumulate the precipitate-enriched solution, the accumulation chamber having a greater diameter than the absorption column chamber; a gas outlet for releasing the sulfur-depleted gas stream; and a liquid outlet provided in fluid communication with the accumulation chamber for releasing the precipitate-enriched solution; and a gas inlet for receiving the sulfur-containing gas stream; a liquid inlet for receiving an absorption solution comprising a metal cation; an absorption column chamber for allowing contact of the sulfur-containing gas stream and the absorption solution, such that the metal cation reacts with the sulfur compound to form a metal sulphide precipitate and/or a metal mercaptide precipitate, thereby producing a sulfur-depleted gas stream and a precipitate-enriched solution; an accumulation chamber provided at a downstream end of the absorption chamber with respect to flow of the absorption solution, configured to receive and accumulate the precipitate-enriched solution, the accumulation chamber having a greater diameter than the absorption column chamber; a gas outlet for releasing the sulfur-depleted gas stream; and a liquid outlet provided in fluid communication with the accumulation chamber for releasing the precipitate-enriched solution; and a recycle system in fluid communication with the liquid outlet and the liquid inlet for recycling a stream derived from at least a portion of the precipitate-enriched solution back as at least part of the absorption solution supplied to the liquid inlet; and a control system configured to monitor and control a concentration of the metal sulphide precipitates present in the absorption solution below a threshold in order to maintain rheological properties of the absorption solution in the absorption column chamber and/or the accumulation chamber, wherein the threshold is 5 wt% or wherein a surface active agent is added to the absorption solution in order to raise the threshold compared to no surface active agent.