9 results about "Deinking" patented technology

The application relates to a plasma direct deinking method, belonging to the paper deinking technical field.The plasma direct deinking method is characterized in that: a plasma spray gun with a special electrode structure is designed and manufactured, ionized working gas is used as a working medium, a plasma jet is generated to directly process the surface of paper materials, and different carrier gases are used according to different inks.The application uses ionized gas instead of chemical deinking agents, adopts a direct surface processing method, and under the bombardment of plasma particles, the combination of ink components with paper fibers is lost, and the pigments and other particles in the components are stripped from the surface of the paper, so that the ink on the surface of the paper is directly removed.The application can obtain a plasma direct deinking method.

The invention discloses a plastic deinking agent and a preparation method and application thereof, and belongs to the technical field of deinking agents. The plastic deinking agent is composed of an organic solvent, a surfactant and water; the organic solvent is composed of an ether solvent, an ester solvent, a ketone solvent and an amide solvent; the surface active agent is prepared from a polysorbate surface active agent and a polyoxyethylene surface active agent. The plastic deinking agent provided by the invention has the effects of emulsifying, wetting, dispersing and stripping printing ink on plastic, can effectively destroy the adhesive force of the printing ink on the plastic, and can recycle the printing ink on a plastic cup or clean dirt on the printing ink, and the stripped printing ink cannot be deposited on the plastic cup. The plastic deinking agent disclosed by the invention has the characteristics of low foam, easiness in cleaning, recyclability and high cost performance.

The application relates to a strong-acid and strong-alkali resistant protective ink applied to a glass AG process and a preparation method thereof, and belongs to the technical field of coating. The glass protective ink provided by the application comprises a protective agent and a diluent; the protective agent comprises the following components in parts by weight: etherified phenolic resin 30-35 parts, epoxy resin 25-30 parts, additive 0.5-1 part, filler 20-30 parts, solvent 5-10 parts and silane coupling agent 3-6 parts; the mass ratio of the protective agent to the diluent is 1:(0.8-1.2). The glass protective ink provided by the application adopts a spraying process, is simple to use and operate, and is high in production efficiency; after high-temperature curing and film forming, the strong-acid and strong-alkali resistant performance of the ink protective layer is excellent, the ink protective layer keeps high adhesion on the glass, after etching, the ink is removed by using a strong-alkali deinking solution, the glass surface is not damaged, and the yield of a glass AG process production line is greatly improved.

The utility model relates to the field of waste paper recovery, in particular to a paper pulp deinking device for waste paper recovery. The utility model provides a paper pulp deinking device for waste paper recovery, which can scrape settled paper or impurities while pushing foams during deinking, prevents part of foams from being discharged, prevents gas from entering due to blockage of a gas outlet, improves the treatment efficiency and quality, and is convenient to use. A paper pulp deinking device for waste paper recycling comprises a base, a flotation frame and the like, and the flotation frame is connected to the upper side of the base. The sliding frame moves left and right to drive the pushing plate to move so as to push foam, and the moving frame moves left and right to drive the scraper to move so as to scrape deposited paper or impurities, so that the deposited paper or impurities can be scraped while the foam is pushed during deinking, and the situation that part of the foam cannot be discharged is prevented; and therefore, the treatment efficiency and quality are improved, and the device is convenient to use.

The utility model provides a kind of saponified waste paper deinking system, comprising: skimming trough, the saponified material discharge port of skimming trough is connected with the feed inlet of saponified material collecting groove by pipeline, the discharge port of saponified material collecting groove is connected with the feed inlet of first saponified material dilution groove by first conveying pump, first clean water pipe is connected on the pipeline of first conveying pump and the feed inlet connection of first saponified material dilution groove, the feed inlet of second saponified material dilution groove is connected between the discharge port of first saponified material dilution groove and by second conveying pump, second clean water pipe is connected on the pipeline of the discharge port of first saponified material dilution groove and the feed inlet connection of second conveying pump, the feed inlet of pulper is connected between the discharge port of second saponified material dilution groove and by third conveying pump.This saponified waste paper deinking system adds after separating, diluting to saponified material, by-product of virgin fiber pulping production line, in the pulper of waste paper deinking pulp production line, can completely replace deinking agent and reduce production cost.

The invention discloses an efficient paper pulp deinking regeneration process based on recycled waste paper, and belongs to the technical field of waste paper pulp deinking, and the efficient paper pulp deinking regeneration process comprises the following steps: conveying waste paper and water into a stirring barrel for repulping, and stirring the waste paper and the water to form high-concentration paper pulp, medium-concentration paper pulp and low-concentration paper pulp by adjusting the angle between a stirring blade and a stirring shaft, and adding different deinking agents according to the paper pulp with different concentrations, and then washing and deinking. According to the invention, the angle of the stirring blade is adjusted; the angle of the stirring blades is adjusted along with the change of the concentration of paper pulp in the stirring barrel, so that fibers and ink in the paper pulp are better dispersed, the deinking effect is better in the washing process, reverse flow circulation is formed due to the fact that the conveying directions of water and the paper pulp are opposite, the paper pulp and water are impacted at the same time, and the cleaning efficiency is improved; metal substances and ink particles in the waste paper pulp are further reduced, and the deinking effect is improved.

The invention provides a deinking method including a step of peeling off and removing, from a plastic substrate having an ink layer, the ink layer by using a deinking agent that contains (a) 20 mass % or more of a water-soluble solvent and (b) 0.1 mass % to 10 mass % of an inorganic base. According to the invention, it is possible to provide a deinking method that can easily peel off an ink layer printed on a plastic substrate, a deinking agent that can be used in the deinking method, and a plastic substrate recovery method using the same.

This invention relates to the field of fiber ink separation device technology, specifically a fiber ink separation device based on high-intensity grinding extrusion. The device includes a grinding extruder, which comprises a housing, a main shaft, and grinding columns mounted on the main shaft. The housing includes an upper shell and a lower shell; the upper shell has a closed structure, and the lower shell has a sieve plate structure. The main shaft has a conical structure, with the diameter at the end near the feed inlet smaller than the diameter at the other end. Several grinding columns, each with a square pyramidal structure, are arranged spirally and spaced around the main shaft to transport the slurry and, in conjunction with the inner wall of the housing, grind the slurry. This invention, by setting a high-intensity grinding extruder in the upstream process of the bleaching tower, utilizes a conical main shaft and spirally arranged square pyramidal grinding columns to forcefully push, squeeze, and knead the slurry, allowing ink particles to be initially physically separated. This reduces the difficulty of subsequent chemical deinking, shortens the time required for chemical deinking, and improves the efficiency of fiber ink separation.

The invention discloses an office waste paper pulp deinking process based on matching of a deinking agent and flotation equipment, which comprises the following steps: (1) primary flotation deinking treatment: adopting a vertical flotation tank as primary flotation equipment, and adding a nonionic surface active deinking agent into the primary flotation equipment; (2) secondary flotation deinking treatment: adopting a horizontal flotation tank as secondary flotation equipment, and adding a composite deinking agent into the horizontal flotation tank; and (3) three-stage flotation deinking treatment: a horizontal flotation tank is adopted as three-stage flotation equipment, the three-stage flotation equipment is provided with a foam generator, the residual composite deinking agent in the step (2) is utilized to play a deinking role, and the deinked office waste paper pulp is obtained. According to the technical scheme provided by the invention, the final total ink removal rate is obviously improved through accurate matching of the deinking agent type and the flotation equipment type.