4results about How to "Suitable for recycling" patented technology

The hot-water appliance (10) comprises a water tank (12) provided with a water tank wall (14). The hot-water appliance (10) further comprises a vacuum vessel (20) enclosing a vacuum space (V). The water tank (12) is entirely comprised in the vacuum space, and the entire water tank wall (14) is subjected to the vacuum. The vacuum vessel (20) is provided with a vacuum vessel wall (22) which is composed of a number of vacuum vessel wall parts which are connected to each other in a gas-tight manner by means of fusion or welding. Furthermore, the hot-water appliance (10) comprises at least one functional tube (100, 200, 300, 400, 500) which extends through the water tank wall (14) and is connected to the water tank wall (14) in a gas-tight manner at the location of a water tank wall connection (18). The functional tube (100, 200, 300, 400, 500) also extends through the vacuum vessel wall (22) and is connected to the vacuum vessel wall (22) in a gas-tight manner at the location of a vacuum vessel wall connection (24).

The present application relates to the technical field of EVA production waste heat recovery, and is a device and method for recycling low-pressure steam by-produced during EVA production, which comprises the following steps: when EVA products with VA content are produced, a screw type steam compressor is used to compress low-pressure steam with a pressure lower than 0.45 MPag to 0.45 MPag; when EVA products with high VA content are produced, a screw type steam compressor is used to compress mixed low-pressure steam to 0.45 MPag. When the steam by-produced from the hot water system of the EVA production device is compressed by using a compression device, the present application can maximize the volumetric efficiency of the screw type steam compressor by mixing the two by-produced streams with a large flow difference before compression, so as to achieve the purpose of energy saving; and compared with the comparative example, the present application has better energy saving benefits, investment recovery rate and standard coal saving rate.

The utility model discloses a cold-chain logistics packing box sealing device which comprises a foam box, a net basket for preventing the foam box from being scratched is arranged outside the foam box, a fixing frame is fixed to the top of the net basket through screws, and a foam cover plate covers the top of the foam box. A sealing structure for pressing the foam cover plate is arranged at the top of the fixed frame; the net basket and the foam box are arranged to be of a mutual supporting structure, the net structure of the net basket effectively prevents the foam box from being scratched and damaged in the transportation process, meanwhile, the foam box provides internal support for the net basket, the net basket is prevented from being pressed and deformed, the foam box can be independently taken out of the net basket and is convenient to replace, and the foam box is convenient to use. The air bag and the top cover can be quickly disassembled and assembled through the magnetic attraction type detachable structure, and when the air bag is aged or damaged, the air bag can be replaced without a tool, and disassembly and replacement are quick.

This utility model relates to a device for desulfurization, dechlorination, and hardening of high-salinity wastewater using calcium carbide slag, belonging to the field of industrial wastewater treatment technology. The method includes steps such as heavy metal removal, magnesium ion removal, two-stage desulfurization and dechlorination, and calcium ion removal, sequentially achieving the removal of heavy metals and magnesium ions from the wastewater. 2+ SO4 2‑ Cl ‑ and Ca 2+ The system achieves efficient removal of calcium carbide slag, and the resulting precipitate is partially recycled for desulfurization after solid-liquid separation. The device includes a neutralization tank, a magnesium precipitation tank, a first reaction tank, a second reaction tank, a calcium precipitation tank, a desulfurization tower, a blower, and multi-stage solid-liquid separation units. It features a compact structure and clear division of labor. This invention fully utilizes calcium carbide slag solid waste resources, achieving high treatment efficiency, low operating costs, and resource-based utilization of byproducts. It possesses good engineering adaptability and economic and environmental benefits.