5results about How to "Save material consumption" patented technology

The invention relates to a rotary valve, comprising: a valve body provided with a first group of flow channels, a second group of flow channels and a third group of flow channels, ports of the first group of flow channels, the second group of flow channels and the third group of flow channels are disposed on a surface of the valve body; and a valve sleeve sleeved coaxially hermetically outside the valve body, and the valve sleeve is evenly opened with a plurality of through-holes, and an inner end of each through-hole is provided with a vertical groove extending up and down along an inner wall of the valve sleeve, the vertical groove is divided into three sections along the vertical direction, which communicate with the ports of the first group of flow channels, the second group of flow channels and the third group of flow channels, respectively, the first group of flow channels are in a working state, a switching valve is provided at the through-hole, and the switching valve switches one group of the second group of flow channels and the third group of flow channels into the working state. The invention also discloses a pressure swing adsorption device and a method for recovering component with weaker adsorbability from a gas mixture using the pressure swing adsorption device.

This utility model discloses a catalyst collection and conveying device at the bottom of the riser pipe of a catalytic cracking unit, belonging to the field of petrochemical technology. It includes a frame platform with a first riser pipe and a second riser pipe mounted on it. A collection hopper is fixedly connected to the bottom of both the first and second riser pipes. In this utility model, fallen catalyst dust is collected by the collection hoppers at the bottom of the first and second riser pipes. The collected catalyst dust is then driven to the inner cavity of a storage tank via a blower, a first electrically controlled valve, an exhaust pipe, a second electrically controlled valve, an upper guide pipe, and a lower guide pipe. The collection hoppers and closed conveying pipes prevent catalyst powder from floating around due to wind during discharge, effectively controlling dust pollution in the unit area, improving the working environment, and protecting equipment and personnel health.

This invention relates to the field of casting technology, and more specifically, to a method for integral casting of multi-layer castings. This invention provides a method for integral casting of multi-layer castings, solving the problems of high difficulty in integral casting of multi-layer castings, long welding cycles during assembly, low economic efficiency, and difficulty in mass production in existing technologies. The integral casting technology for multi-layer castings in this invention includes the design of the casting process and the molding scheme, realizing the integral forming of multi-layer castings through casting. Complete machine manufacturers can directly obtain finished products by purchasing castings, avoiding the need for multiple purchases of raw materials and subsequent welding processes. This effectively improves economic efficiency and production cycle, significantly shortens the production cycle, saves manpower and material resources, and reduces manufacturing costs.

The application discloses a process for recycling pyridine or pyridine derivatives from waste residues in the synthesis of hexachlorocyclotriphosphazene, comprising: mixing the waste residues separated after the synthesis reaction of hexachlorocyclotriphosphazene with water in a mass ratio of 1:0.5-2.5 to obtain a mixture, adding alkali to the mixture to perform a neutralization reaction, controlling the reaction temperature to be 0-50 DEG C, adjusting the end point pH value to 6-10 to obtain a neutralization liquid; centrifuging or filtering the neutralization liquid to obtain a filtrate, and extracting the filtrate with chlorobenzene to obtain an extraction phase and a raffinate phase; rectifying the extraction phase to obtain chlorobenzene and recycled pyridine or pyridine derivatives. The application can fully utilize sodium chloride generated in the system neutralization, does not need to introduce salt from outside, realizes salting-out and then extraction, and returns the water phase after extraction to directly reuse, thereby reducing the wastewater generation amount and energy consumption for wastewater reuse, greatly reducing the extraction difficulty of pyridine or pyridine derivatives, reducing the amount of extractant, and saving the energy consumption of the rectification and separation system.