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The invention relates to a method and a system for treating and recovering adipic acid ammonium waste liquid and the recovering method comprises the following steps: A. filtering the solid impurities in the waste liquid; B. controlling the temperature of the filtered waste liquid and acidizing the filtered waste liquid; C. decreasing the temperature of the acidulated waste liquid and crystallizing the acidulated waste liquid; D. collecting adipic acid crystal after solid-liquid separation; E. washing to get adipic acid crystal and collecting the adipic acid crystal after solid-liquid separation. The recovering method and recovering system of the invention have the following advantages that the recovering method and recovering system of the invention are able to acquire a purified adipic acid with standard capacitance and able to be circularly used in the industries such as an electrolytic capacitor, etc. with a simple and efficient technique and obvious economical benefit and environment protection effect.

The invention has a discharge device (100) for discharging a container (108) containing a viscous substance and having an elastic shell material. The discharge device has a winding roller (105) and a counter pressure roller (114) and an actuator (102) for rotating the winding roller and a control part (101) for controlling the actuator. The inner part (111) of the winding roller is hollow, a there is therein an attaching arrangement (106), where the shell material of the container to be discharged is attached. Additionally the shell of the winding roller has an opening, in which opening there is a lid part (110) which can be opened, and the lid part has a shape (112) for the shell material of the container attached to the attaching arrangement. The winding roller is rotated so that the shell material of the container attached to the attaching arrangement is wound around the winding roller. The winding roller and counter pressure roller are pressed against each other so that the shell material of the container winding around the winding roller passes between the rollers. The emptying is adjusted so that the flow of content discharged from the container remains at a set constant. This adjustment is controlled with a control curve stored in the control part, which curve has at least the torque of the winding roller as a function of the turning angle.

Copper alloy electroplating baths include one or more sources of copper (I) ions and one or more sources of tin ions to electroplate copper / tin alloys of mirror bright white bronze. The copper alloys may also include one or more sources of silver ions to electroplate ternary alloys of bright white bronze containing copper / tin / silver. The copper alloy electroplating baths are cyanide-free.

The invention relates to a composition comprising a plant-derived cellulose particulate material comprising less than 30 wt% extractable glucose; and extractable xylose in an amount of at least 3 % of the amount of extractable xylose in the starting plant material, and an agent selected from the group comprising natural ionic polymersor natural non-ionic polymers; synthetic water dispersible polymers, and / or associative thickeners, and its various uses, including as a drilling fluid.

The invention relates to a preparation method of copper nanowires and in particular relates to a controllable preparation method of high-yield monocrystal copper nanowires in a liquid-phase reduction manner. The controllable preparation method comprises the steps: firstly, mixing a divalent metal copper salt solution and ethylenediamine, and heating in a water bath to form a single and stable copper ion chelate compound; mixing a strong base solution with hydrazine hydrate, and preparing a reducing agent in the water bath at the same temperature; then transferring the two mixture solutions into a reaction vessel, fully stirring to reach a uniform state, covering well, and placing in the water bath at the same temperature for heating reaction to prepare the copper nanowires; and fishing out flaky copper nanowires floating on the upper layer of the solution, washing the flaky copper nanowires with deionized water and absolute ethyl alcohol in sequence three times, and drying at room temperature under an Ar gas protection condition to prepare the copper nanowires. The controllable preparation method provided by the invention has the advantages of simple process, low cost and high yield, and the prepared copper nanowires are of monocrystal structures, and have relatively smooth surfaces, uniform radial thickness, and controllable and more uniform length and diameter.