Chemical waste heat boiler with safety alarming function

Abstract

The invention discloses a chemical waste heat boiler with a safety alarming function. The chemical waste heat boiler comprises a shell. An inner bore is formed in the middle inside the shell, and a plurality of heat exchanging tubes are parallel arranged in the inner bore at equal distances. A hot end tube plate is fixedly mounted at one end of each heat exchanging tube, and a cold end tube plateis fixedly mounted at the other end of each heat exchanging tube. A cold end tube box is arranged on the side close to the cold end tube plates and in the upper position inside the inner bore; a process gas inlet is fixedly formed in the middle of one end of the shell, and a process gas outlet is fixedly formed in the middle of the other end of the shell. A steam-water outlet is formed in the position, close to one side, of the upper end face of the shell. According to the chemical waste heat boiler with the safety alarming function, built-in welding holes, a triangular supporting frame and lifting lugs are arranged, the higher anti-pulling-out strength is achieved, smoothness during equipment operating is guaranteed, equipment carrying is facilitated, and the better using prospects are brought.

Description

technical field [0001] The invention relates to the field of waste heat boilers, in particular to a chemical waste heat boiler with safety alarm. Background technique [0002] Waste heat boiler refers to a boiler that uses the waste heat in the industrial production process to produce steam. It is a high-temperature, high-pressure heat exchanger. There are certain disadvantages in the use of existing waste heat boilers. High-temperature and high-pressure waste heat When the temperature is 300-400 degrees Celsius, the creep will cause the relaxation of the residual stress, so that the expansion will fail quickly, and if only the strength welding method is used, although it can withstand higher pressure and higher However, under high temperature conditions, the action of cyclic stress can easily lead to fatigue cracks in welded joints, and crevice corrosion can accelerate the destruction of welded joints. There is no triangle support frame and lifting lug design, and the struc...

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Problems solved by technology

[0002] Waste heat boiler refers to a boiler that uses the waste heat in the industrial production process to produce steam. It is a high-temperature, high-pressure heat exchanger. There are certain disadvantages in the use of existing waste heat boilers. High-temperature and high-pressure waste heat When the temperature is 300-400 degrees Celsius, the creep will cause the relaxation of the residual stress, so that the expansion will fail quickly, and if only the strength welding method is used, although it can withstand higher pressure and higher However, under high temperature conditions, the action of cyclic stress can easily lead to fatigue cracks in welded joints, and crevice corrosion can accelerate the destruction of welded joints. There is no triangle support frame and lifting lug design, and the saddle has poor structural stability, which is not convenient for equipment The handling brings inconvenience to the use and has a certain impact on the use of waste heat boilers. Therefore, we propose a chemical waste heat boiler with a safety alarm

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