6 results about "Anthraquinone process" patented technology

The application provides an extraction device and process for producing hydrogen peroxide by an anthraquinone method. The device comprises an extraction tower, a high-concentration hydrogen peroxide discharge port arranged at the bottom of the extraction tower, a feed inlet arranged at the lower part of the extraction tower, and a water inlet arranged at the upper part of the extraction tower. A raffinate phase discharge port is arranged at the top of the extraction tower and is connected to a raffinate separator through a pipeline. A light phase outlet is arranged at the upper part of the raffinate separator, and a heavy phase outlet is arranged at the lower part of the raffinate separator. The heavy phase outlet is connected to multiple outlet pipelines according to different hydrogen peroxide concentrations after passing through a hydrogen peroxide concentration controller. The outlet pipeline with low hydrogen peroxide concentration is connected to a back feeding port of the extraction tower. The device and process can realize high extraction concentration, high extraction efficiency, controllable product concentration, and the like. Meanwhile, the device is provided with a safety interlocking system, which can effectively reduce the risk of over-temperature and over-pressure accidents.

The application discloses a method for preparing hydrogen peroxide by photocatalysis without a sacrifice agent based on naphthalene imide / perylene imide polymer. The naphthalene imide / perylene imide polymer photocatalyst is synthesized by a hydrothermal method, and the catalyst can catalyze the reaction of oxygen and water to prepare hydrogen peroxide by photocatalysis without adding a sacrifice agent. The naphthalene imide / perylene imide polymer synthesized by the application is a photocatalyst with a donor / acceptor electron transport interface, and the structure greatly improves the electron-hole transport rate, thereby promoting the generation of hydrogen peroxide and inhibiting the decomposition of hydrogen peroxide. The application first applies the naphthalene imide / perylene imide polymer catalyst to the field of photocatalytic preparation of hydrogen peroxide. Compared with the industrial anthraquinone method and the method for preparing hydrogen peroxide by electric and thermal catalysis, the application is safe and environmentally friendly, simple to operate and low in cost.

The application discloses a kind of high-efficiency condensing separation equipment for anthraquinone hydrogen peroxide production, anthraquinone hydrogen peroxide technical field, including: pipe box section and separation section, pipe box section is equipped with symmetrically arranged upper tube sheet and lower tube sheet, baffles are arranged staggeredly between upper tube sheet and lower tube sheet, a plurality of vertically arranged heat transfer tube bundles are inserted between baffle, heat transfer tube bundle is located in the separation section and is sleeved with back cooling section, both sides of back cooling section are respectively communicated with pipe box section, one side of pipe box section is equipped with cold flow inlet, and the other side of pipe box section is equipped with cold flow outlet, cooling medium flows into pipe box section through cold flow inlet, one way along baffle and passes through cold flow outlet, another way along back cooling section recondenses heat transfer tube bundle and converges with one way along baffle and passes through cold flow outlet.This application has high condensing efficiency and good condensing effect, improves the use efficiency of equipment and increases the operating efficiency of heat exchange, improves the reliability of equipment, and increases the production performance.

This invention discloses a working solution for synthesizing hydrogen peroxide via the anthraquinone method, comprising a solvent and a working carrier. The solvent comprises aromatic hydrocarbons, diisobutylmethanol, and terephthalamide derivative A. Terephthalamide derivative A, by volume, has C9~C64... 10 The aromatic hydrocarbon comprises 30-95 parts, preferably 60-80 parts; the diisobutylmethanol comprises 2-20 parts, preferably 5-15 parts; and the terephthalamide derivative A comprises 5-30 parts, preferably 5-15 parts; the aromatic hydrocarbon is generally C9-C6. 10 Aromatic hydrocarbons; the working carrier is one or more of anthraquinone and its derivatives. This working solution exhibits excellent solubility and mass transfer capabilities for hydrogen, anthraquinone, and hydroanthraquinone, with a hydrogenation efficiency exceeding 13 g / L. It has low miscibility with water, good extraction and separation effects, and stable physicochemical properties. It can improve the production efficiency of the anthraquinone process for producing hydrogen peroxide and has promising prospects for industrial application.

The present invention relates to a process for the purification of an aqueous effluent (A) generated in the manufacture of hydrogen peroxide by the anthraquinone method, comprising the steps of a) adding to the aqueous effluent (A) an acid (C) and an organic solvent (B) to obtain a mixed medium (D); b) decanting the mixed medium (D) obtained in step a) to obtain 2 phases (E, F), wherein the aqueous phase (E) has a TOC content lower than the aqueous effluent (A) and the liquid organic phase (F) has a TOC content higher than the aqueous effluent (A); and c) entering the aqueous phase (E) obtained in step b) into a coalescer (4) to separate the aqueous phase (E) in 2 new phases, a first fluid (G) with a TOC content lower than the aqueous phase, and a second fluid (H) with a TOC content higher than the aqueous phase. Further, the present invention relates to an apparatus for the purification of an aqueous effluent generated in the manufacture of hydrogen peroxide by the anthraquinone method. Further, the present invention relates to the use of the inventive process in the manufacture of hydrogen peroxide by the anthraquinone method; and to a process for the manufacture of hydrogen peroxide and for the purification of an aqueous effluent (A) generated in said manufacture of hydrogen peroxide.

The application discloses an ionic COF catalyst, a preparation method thereof and application of the catalyst in photocatalytic production of hydrogen peroxide. The catalyst is prepared from 2,4,6-triformylphloroglucinol and a phenanthridine monomer containing a double amino group through Schiff base condensation reaction under catalysis of acetic acid in a mixed solvent, and has an ionic covalent organic framework structure connected with beta-ketoenamine. The catalyst prepared by the application has irregular sheet-like agglomeration, a layered porous structure, a high specific surface area and a controllable ionic microenvironment, and can simultaneously strengthen oxygen adsorption activation and photogenerated carrier separation efficiency. When the catalyst is applied to photocatalytic production of hydrogen peroxide, efficient production of hydrogen peroxide can be realized under the conditions of pure water, visible light and no sacrificial agent, and the yield can reach 457 μM h ‑1 The application provides a green, mild and sustainable new solution to solve the problems of high energy consumption and high pollution of the traditional anthraquinone method and the bottleneck problem of the existing COF photocatalytic performance.