Pipe pile waste heat recovery system

Abstract

The invention relates to a pipe pile waste heat recovery system. The pipe pile waste heat recovery system is used for the scene at least having a high-pressure kettle, a boiler or super-high-temperature high-pressure steam. The pipe pile waste heat recovery system comprises a waste steam-water heat exchanger I, a waste water heat exchanger II and a high-temperature air compressor, wherein the waste steam-water heat exchanger I is used for storing waste water and waste gas discharged from the high-pressure kettle to be cooled, and water in a high-temperature water storage tank and high-temperature compressed air are heated through the heat of the stored hot water; the waste water heat exchanger II is connected with a boiler water tank, and water in the water tank is heated by adopting the heat of condensate water of a steam curing pool and low-temperature water of the waste steam-water heat exchanger I; and high-temperature compressed air generated by the high-temperature air compressoris added into high-temperature water, and then is heated again through a boiler tail smoke heat exchanger to form external steam with the temperature being 110 DEG C or above and to be stored in a high-temperature high-pressure gas storage tank. According to the pipe pile waste heat recovery system, the boiler tail smoke, the waste steam-water of the high-pressure kettle, the condensation water of the steam curing pool and the heat of a pile in the high-pressure kettle to be cooled are fully utilized, so that the energy-saving effect is good; and the pipe pile waste heat recovery system is suitable for various occasions.

Description

technical field [0001] The invention relates to a prestressed pipe pile manufacturing process, in particular to a pipe pile waste heat recovery system. Background technique [0002] Prestressed concrete pipe piles can be divided into post-tensioned prestressed pipe piles and pretensioned prestressed pipe piles. When making prestressed pipe piles, first mix the well-proportioned concrete and put it into the pipe mold, then carry out mold closing, tensioning, and centrifugal molding, and then put it into the steam curing pool and add steam for normal pressure steam curing (temperature 60 -85°C, the total time is about 6 hours), after the atmospheric pressure steam curing is completed, the pipe mold is removed, and the pipe pile is pulled into the autoclave for high temperature and high pressure steam curing (temperature 175-185°C, pressure 1.0Mpa, The total time is about 10 hours), and the pipe piles are finished products after being steamed at high temperature and high press...

AI Technical Summary

Problems solved by technology

[0004] Those skilled in the art conduct analysis in conjunction with the flow of the existing process. Since the autoclave waiting for gas supply is at room temperature, after the steam is poured in, most of it will be converted into condensed water. According to actual statistics, the 10 kg pressure to be cooled After the pressure between the autoclave and the normal pressure autoclave to be heated is about 3 kg, pour about 3 kg of steam from the autoclave to be cooled into the steaming tank, and finally when about 1 kg, the autoclave and The pressure balance between the steaming tanks can no longer be reversed, and can only be discharged into the air, so that the recovery efficiency of steam is significantly reduced, and the heat of the pipe piles in the autoclave to be cooled is also wasted. The heat of the condensed water is also wasted

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