3results about How to "Prevent high temperature corrosion" patented technology

The embodiment of the invention provides a high-temperature heat storage-supercritical steam generation system. The high-temperature heat storage-supercritical steam generation system comprises a heat storage body, a supercritical steam generation unit connected with the heat storage body and an intelligent control unit connected with the supercritical steam generation unit. The heat storage body comprises a solid waste-based graded porous carrier and fused salt filled in gaps of the solid waste-based graded porous carrier; the supercritical water vapor generating unit comprises a water vapor generator with a built-in spiral metal pipe and a multi-stage heat exchange runner; the intelligent control unit comprises a digital controller, an axial-flow compressor and a heat exchange pump, the digital controller is connected with the axial-flow compressor, the heat exchange pump and the heat storage body, and the digital controller is configured to dynamically adjust the running states of the axial-flow compressor, the heat exchange pump and the heat storage body.

This invention provides a method for constructing refractory bricks. The refractory bricks are installed onto L-shaped hooks pre-installed on a water-cooled wall. Filler is then placed between adjacent refractory bricks, and finally, self-flowing castable refractory is poured between the refractory bricks and the water-cooled wall. This method allows the refractory bricks to be fixed to the side of the water-cooled wall in contact with flue gas (i.e., the heat exchange surface) using hooks. This not only prevents high-temperature corrosion of the water-cooled wall by flue gas but also effectively ensures the heat exchange efficiency of the water-cooled wall and extends its service life.

The invention provides a treatment method of abrasion-resistant MoSi2 for a boiler water-cooled wall tube, the abrasion-resistant MoSi2 and application, and belongs to the technical field of optimization treatment of power plant boiler water-cooled wall tubes. The treatment method comprises the following steps: S110, carrying out heat preservation on a MoSi2 block at a first temperature for a preset time; s120, the MoSi2 block subjected to heat preservation treatment is cooled to a second temperature, and heat preservation is conducted for preset time; s130, immersing the MoSi2 block into a molten-state mixed salt of KCl and Na2SO4 at a third temperature, and carrying out heat preservation for a preset time; and the step S130 is repeated for 3-6 times, the MoSi2 block is taken out and cooled in air, and the abrasion-resistant MoSi2 compound is obtained. MoSi2 subjected to salt bath circular treatment and strengthening is used as a spraying material, so that high-temperature corrosion of the boiler water wall tube can be prevented and treated, long-period stable operation of a unit is guaranteed, and safety is improved.