Methods and systems are provided for recovering an organic solvent from a waste sludge generated during formation of a polyarylene sulfide. Methods include combining the waste sludge with a liquid extractant that extracts the organic solvent into a homogeneous liquid phase. Upon a temperature change, the homogeneous liquid phase can separate into an organic solvent-rich liquid phase and a liquid extractant-rich liquid phase. The two liquid phases can be separated and further processed if desired to further purify the recovered organic solvent. Methods can also include forming the polyarylene sulfide by a polymerization process and thereafter purifying a slurry of the polyarylene sulfide. A liquid washing product is formed as a result of the purification process, which can be subjected to a distillation process that forms an organic solvent-rich stream and the waste sludge.

A laminated spiral dewatering equipment, including a filtration cavity, a spiral shaft, a driving device and multiple supporting plates. The supporting plates are configured to support and position the filtration cavity, the spiral shaft and the driving device. The spiral shaft is penetratedly arranged in the filtration cavity. The filtration cavity includes a first closed ring piece group and a second closed ring piece group. A primary driving rod of the driving device is arranged above the filtration cavity, and is configured to drive an upper end of the first closed ring piece group to circumferentially reciprocate, and a lower end of the first closed ring piece group to perform a up-down reciprocating linear motion.

A laminated spiral dewatering equipment, including a filtration cavity, a spiral shaft, a driving device and multiple supporting plates. The supporting plates are configured to support and position the filtration cavity, the spiral shaft and the driving device. The spiral shaft is penetratedly arranged in the filtration cavity. The filtration cavity includes a first closed ring piece group and a second closed ring piece group. A primary driving rod of the driving device is arranged above the filtration cavity, and is configured to drive an upper end of the first closed ring piece group to circumferentially reciprocate, and a lower end of the first closed ring piece group to perform a up-down reciprocating linear motion.

An apparatus for storing organic materials includes: a body having an opening for receiving the organic materials to be stored; an outlet formed in the body through which the organic materials are unloaded from the body; and a cooling fluid circuit for circulating cooling fluid through the organic material collected by the hopper.

An apparatus for storing organic materials includes: a body having an opening for receiving the organic materials to be stored; an outlet formed in the body through which the organic materials are unloaded from the body; and a cooling fluid circuit for circulating cooling fluid through the organic material collected by the hopper.

A method for filtering solids from a slurry includes placing a filter assembly into a filtration tank containing the slurry. The filter assembly includes a plurality of filter cells each having a filter medium at an exterior and a cavity at an interior. The solids are filtered by moving the slurry through the filter mediums into the interiors of the filter cells to form a filter cake at the exteriors of the filter cells. The filter assembly is moved while applying a vacuum to the interiors of the filter cells through a vacuum transfer system including a mobile part and a stationary part. The mobile part moves along with the filter assembly and is sealed with respect to the stationary part.

A method for filtering solids from a slurry includes placing a filter assembly into a filtration tank containing the slurry. The filter assembly includes a plurality of filter cells each having a filter medium at an exterior and a cavity at an interior. The solids are filtered by moving the slurry through the filter mediums into the interiors of the filter cells to form a filter cake at the exteriors of the filter cells. The filter assembly is moved while applying a vacuum to the interiors of the filter cells through a vacuum transfer system including a mobile part and a stationary part. The mobile part moves along with the filter assembly and is sealed with respect to the stationary part.

A microparticle filter suitable for filtering microparticles from effluent from a textile treatment apparatus. The filter comprises a filter chamber comprising chamber walls, an inlet and an outlet. The filter also comprises a filter medium contained within the filter chamber. The filter medium is configured to filter microparticles from the effluent forming a filter residue and providing a filtered effluent to the outlet. The filter comprises a filter residue collection chamber located external to the filter chamber, and a filter residue removal apparatus. The chamber walls comprise an opening and a moveable member movable between a first and a second configuration; wherein: in the first configuration the moveable member cooperates with the chamber walls to seal the filter chamber so entry of the effluent into the filter chamber is through the inlet only and exit of the filtered effluent from the filter chamber is through the outlet only. In the second configuration the moveable member has moved to provide an opening in the chamber walls so that the filter residue removal apparatus is operable to remove filter residue from the within the filter chamber to the filter residue collection chamber through the opening. The present disclosure also relates to textile treatment apparatus comprising the microparticle filter, to the use of the microparticle filter and the textile treatment apparatus, and to methods of filtering microparticles from effluent from a treated textile.

A microparticle filter suitable for filtering microparticles from effluent from a textile treatment apparatus. The filter comprises a filter chamber comprising chamber walls, an inlet and an outlet. The filter also comprises a filter medium contained within the filter chamber. The filter medium is configured to filter microparticles from the effluent forming a filter residue and providing a filtered effluent to the outlet. The filter comprises a filter residue collection chamber located external to the filter chamber, and a filter residue removal apparatus. The chamber walls comprise an opening and a moveable member movable between a first and a second configuration; wherein: in the first configuration the moveable member cooperates with the chamber walls to seal the filter chamber so entry of the effluent into the filter chamber is through the inlet only and exit of the filtered effluent from the filter chamber is through the outlet only. In the second configuration the moveable member has moved to provide an opening in the chamber walls so that the filter residue removal apparatus is operable to remove filter residue from the within the filter chamber to the filter residue collection chamber through the opening. The present disclosure also relates to textile treatment apparatus comprising the microparticle filter, to the use of the microparticle filter and the textile treatment apparatus, and to methods of filtering microparticles from effluent from a treated textile.

There is disclosed an apparatus for storing organic materials, the apparatus including: a body having an opening for receiving the organic materials to be stored; an outlet formed in the body through which the organic materials are unloaded from the body; a cooling fluid circuit for circulating cooling fluid through the organic material collected by the hopper.