Ring cooling waste heat power generation device for iron and steel plant and power generation method

Abstract

The invention relates to the technical field of waste heat power generation, in particular to a ring cooling waste heat power generation device for an iron and steel plant and a power generation method. The ring cooling waste heat power generation device comprises a device body and a steam condensing mechanism, wherein the device body comprises a main bottom plate; one end of the main bottom plate is connected with a rotor unit; one side of the rotor unit is movably connected with a steam turbine set; the steam turbine set is arranged on the main bottom plate; and the steam condensing mechanism comprises two supporting frames. According to the ring cooling waste heat power generation device for the iron and steel plant and the power generation method provided by the invention, by arranging a cleaning plate, a main rubber ring, vacuum pipes and an auxiliary steam pipe, vacuum generators externally connected with the two vacuum pipes are used for exhausting air to enable the cleaning plate to move left and right in a reciprocating mode, and then the multiple cold water pipes are cleaned in a centralized mode, so that scale is prevented from being formed on the cold water pipes; and in addition, shutdown treatment is not needed during cleaning each time, so that the vacuum rate in the device is prevented from being gradually reduced along with the use time, meanwhile, the period for workers to disassemble and clean the whole device is greatly shortened, resource waste is avoided, and the device is more environmentally friendly when being used for power generation.

Description

technical field [0001] The invention relates to the technical field of waste heat power generation, in particular to a ring-cooled waste heat power generation device and a power generation method for steel plants. Background technique [0002] Waste heat power generation is a technology that uses excess heat energy in the production process to convert it into electrical energy. Waste heat power generation is not only energy-saving, but also conducive to environmental protection. The important equipment for waste heat power generation is the waste heat boiler. It uses the heat or combustible substances in waste gas, waste liquid and other working fluids as a heat source to produce steam for power generation. Because the temperature of the working medium is not high, the volume of the boiler is large and the metal consumption is large. The waste heat used for power generation mainly includes: high temperature flue gas waste heat, chemical reaction waste heat, waste gas, was...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a ring-cooled waste heat power generation device and power generation method for iron and steel plants to solve the problem of serious fouling on the surface of the condensing pipe with the continuous use of the above-mentioned background technology. Dirt and carbonate hard scale, some of them are phosphate and silicate hard scale, which seriously affect the condensation effect. The change of condensation effect drives the change of vacuum degree, and the change of vacuum degree will drive the corresponding change of residual gas discharge temperature, and finally Power generation and power generation efficiency, at present, the condensing pipe will be cleaned after a certain period of time, but the common cleaning is based on the premise of the overall shutdown of the generator set, which will not only waste the time of the staff, but also cause damage to large equipment. Disassembly requires a lot of manpower, material and labor resources, which is a huge waste of corporate resources for the entire large-scale steel manufacturers

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