In a method for reprocessing plastic waste material, in embodiments PET waste material, the plastic waste material is dried by a flash dryer in a conveying line and then fed into a multi-shaft screw machine. In the multi-shaft screw machine, the dried plastic waste material is reprocessed. Pre-drying enables simple, energy-efficient, economical, reliable and effective reprocessing.

A rotary dryer can include a screen that is divided into different portions joined together to form the screen structure. The screen portions can be joined together using one or more quick release latches. Each latch can provide a locking connection between the different screen portions. The latch can be unlocked, e.g., using hand pressure, to disconnect one screen portion from an adjacent screen portion. This can allow quick replacement of one or both screen portions with replacement screen portion(s). The latch may include a latch body and a latch rod. The latch rod may be rotatably connected to the latch body. The latch rod can be connected to one screen portion and the latch body connected to another screen portion. The latch body can rotate around the rotatable connection, causing the screen portions to be pulled together for subsequent use of the screen structure.

A system and method for staged drying of temperature sensitive materials, the method comprising the following steps. Heated air is blown into a duct and solids are introduced into the duct at an elevated position along a vertical portion of the duct. The heated air and solids mixture is then transported along the duct for a desired retention time with adequate initial flash heating of the solids and then a gradual cool down of the solids. The solids are at an elevated temperature beyond the ambient dewpoint with evaporative cooling taking place. The solids and air mixture is then transported in the duct to a cyclone, where the solids are removed from the air. The air is exhausted out of the cyclone by an exhaust duct, and the solids are collected from the cyclone in a container.

A method of making an extruded granular absorbent is provided where the method includes providing an extruder and a starch-containing admixture, and pressurizing the starch containing admixture in the extruder under relatively high extrusion pressures to extrude the pressurized starch-containing admixture from the extruder, and producing a water absorbent and oil absorbent extrudate. The present invention further provides that the extruded granular absorbent may be combined with a non-extruded granular material with relatively high inert or cellulose content where there may be a greater proportion of extruded granular absorbent, and the extruded granular absorbent and non-extruded granular material agglutinate into a clump when wetted with water or urine.

A method of making an extruded granular absorbent is provided where the method includes providing an extruder and a starch-containing admixture, and pressurizing the starch containing admixture in the extruder under relatively high extrusion pressures to extrude the pressurized starch-containing admixture from the extruder, and producing a water absorbent and oil absorbent extrudate. The present invention further provides that the extruded granular absorbent may be combined with a non-extruded granular material with relatively high inert or cellulose content where there may be a greater proportion of extruded granular absorbent, and the extruded granular absorbent and non-extruded granular material agglutinate into a clump when wetted with water or urine.

A system for producing dry nanoparticles from a liquid includes a closed tubing system which incorporates a mister, heater and an electrostatic collector therein. The system is able to produce dry nanoparticles from liquid-suspensions and from solvent solutions.

The disclosure discloses a solid material drying system, including a drying tower and a closed annular conveyor belt at the bottom of the drying tower. A solid material enters the drying tower through the conveyor belt, and a first airflow moves towards the top of the drying tower from the bottom of the drying tower through the conveyor belt. Side walls of the drying tower are provided with several openings, and a second airflow moves towards the outside of the drying tower from the inside of the drying tower. Blocking plates that can block the openings are disposed at positions close to and above the openings inside the drying tower, and the blocking plates are hinged with the side walls of the drying tower. The disclosure is suitable for drying solid materials, and can be efficiently and universally applied to the drying of various types of solid materials.

A method of operating a furnace having a firing system is disclosed. The method includes providing a solid fuel to a sieve; separating the fuel into a portion and a second portion; providing a first portion of a flue gas to a first fuel dryer comprising a first duct; providing the first portion of fuel to the first duct, and drying the first portion of fuel therein; conveying the first portion of fuel through the first duct to the furnace; burning the first portion of fuel with firing system; conveying the second portion of fuel and a second portion of the flue gas to a second fuel dryer in a lower portion of the furnace, providing the second portion of fuel to a mill; pulverizing the second portion of fuel with the mill; conveying the second portion of fuel to the furnace; and burning the second portion of fuel.

An industrial complex for producing charcoal from briquetted wood waste includes a section for heat carrier preparation, a section for ground wood waste preparation, a wood drying section equipped with a driving device, a briquetting section and a low-temperature pyrolysis section. The section for preparing the gaseous heat carrier is in the form of a heat generator and is equipped with a furnace chamber for receiving combustion gases, a unit for incinerating recovered pyrolysis gases and a unit for introducing the steam-gas mixture returned from the drying section. The section for ground wood waste preparation includes a receiving hopper for the feedstock, crushing and milling equipment and a storage hopper equipped with a batch feeder. The wood drying section is equipped with a drying device that operates in a mode of combined circulation in a suspended state of the steam-gas heat carrier and crushed wood. A section for separating the mixed stream exiting the drying device includes a cyclone and a receiving hopper. The pipeline upstream of the cyclone is equipped with a device for regulating the target moisture of wood particles. The separation section includes a flue for dispersing waste gases from drying. The briquetting section is equipped with an extrusion-type press. The section for low-temperature pyrolysis is equipped with devices for producing charcoal.

The present invention discloses a method to continuously manufacture micro- and/or nanoparticles of single component particles or multi-component particles such as particulate amorphous solid dispersions or particulate co-crystals. The continuous method comprises the steps of 1. preparing a first solution comprising at least one component and at least one solvent and a second solution comprising at least one anti-solvent of the at least one component comprised in the first solution, 2. mixing said first solution and said second solution by means of microfluidization to produce a suspension by precipitation or co-precipitation, 3. feeding said suspension to a filtration system to obtain a concentrate stream, 4. feeding said concentrate stream to a spray dryer, 5. atomizing said concentrate stream using at least one atomization nozzle, 6. drying said atomized concentrate stream to obtain particles, and 7. collecting said particles. Single component particles or multi-component particles, particulate amorphous solid dispersions, particulate co-crystals and pharmaceutical compositions are also disclosed.