2results about How to "No maintenance fee" patented technology

This application relates to a direct pyrolysis system for denitrifying urea, belonging to the field of denitrifying urea pyrolysis technology. The direct pyrolysis system includes a urea direct pyrolysis unit and a denitrification reactor. The urea direct pyrolysis unit is connected to the denitrification reactor via pipelines. A high-temperature dust collector is connected to a high-temperature fan via pipelines, and the high-temperature fan is connected to the urea direct pyrolysis unit via pipelines. A urea storage tank is connected to a urea pulverizer via a transfer pump pipeline, and the urea pulverizer is connected to the urea direct pyrolysis unit via pipelines. A water storage tank is connected to the urea direct pyrolysis unit via pipelines. The direct pyrolysis system for denitrifying urea provided in this application has no shared systems, resulting in low initial investment costs, reducing costs by at least 10 million yuan; no steam or demineralized water consumption, resulting in low operating costs, saving at least 2 million yuan annually; a simple system with virtually no maintenance costs; and the ability to reduce the moisture content of flue gas, minimizing the adverse effects of high flue gas moisture content on system equipment operation.

This invention provides a furnace end structure for a graphitization furnace, including a furnace body foundation. A casting block component is installed at the end of the furnace body foundation via a raised platform. The casting block component is composed of a left casting block and a right casting block symmetrically spliced ​​together and fixed by a tensioning mechanism. Refractory fibers are present at the splice points of the left and right casting blocks. Multiple heat dissipation holes are opened at the bottom of the left and right casting blocks along the axial direction of the furnace body foundation. This invention is convenient to construct and install, has low implementation costs, effectively prevents displacement, deformation, and cracking of the furnace end wall, reduces high heat generation and high power consumption caused by poor contact between graphite products in the "conductive wall," ensures the lifespan and performance of the graphite electrodes, reduces material leakage and cross-contamination caused by deformation and cracks in the furnace head and tail walls, enhances ventilation at the bottom of the furnace head and tail, ensures tight contact between the "conductive wall" and other masonry components, maintains good wall integrity, and requires no maintenance costs.