Generating set system of simple low temperature waste heat from large size cement manufacture line in dry method, and technical process

Abstract

The invention is an electric generator system using low temperature afterheat of large-scale dry cement production line, which has two kiln head double-pressure afterheat boilers for heating, producing the whole low pressure steam and simultaneously producing partial high-pressure steam; a kiln tail afterheat boiler mainly for producing high pressure steam; the high pressure steam produced by the two afterheat boilers are mixed and then enter through pipeline into a steam -supply and -condensing steam turbine, and the low pressure steam enters in the steam turbine through steam supply pipeline; the blast steam at the tail of the turbine enters in a condenser, the condensed water enters in a vacuum deoxygenator through a condensed water pump and pipeline, the deoxygenated water in the deoxygenator is supplied through water supply pump into the boiler; the exhaust gas produced by a kiln tail preheater of cement production line is led in the kiln tail afterheat boiler through reformed pipeline.

Description

Technical field: [0001] The invention relates to the technical field of pure low-temperature waste heat power generation, and is suitable for power generation by using low-temperature flue gas waste heat in production lines of cement, steel, building materials, chemicals and ceramics, especially the pure low-temperature waste heat power generation equipment system and process flow of large-scale dry-process cement production lines. technical background: [0002] As we all know, in industrial enterprises such as cement, steel, building materials, chemicals, and ceramics, there are a large number of waste heat resources such as medium and low temperature flue gas, waste steam, and waste hot water that are discharged outside 24 hours a day below 400 °C. The energy they carry belongs to medium and low temperature waste heat. If not utilized, a large amount of waste heat resources will be wasted in vain. [0003] At present, there are roughly two ways to utilize the waste heat r...

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Problems solved by technology

The disadvantages of this technology are obvious: ① Due to the use of post-combustion boilers, the whole system is more complicated than a small thermal power plant, and it is more troublesome to operate; ② Small thermal power plants have low efficiency, large pollution, and large coal consumption. a waste of resource

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