一种硫磺制酸用二氧化硫回收装置

Abstract

本实用新型公开了一种硫磺制酸用二氧化硫回收装置，包括焚硫炉，和焚硫炉依次连接的风机、旋风分离器、吸附筒及改进型降温回收组件；改进型降温回收组件含贯穿储热水箱的螺旋状导流管、第一循环水泵和第二循环水泵，螺旋状导流管输出端连出风管；吸附筒内填改性活性炭，壳体设夹套层，通过支管和第二循环水泵与储热水箱热水出管连通；储热水箱经温度分区板分为高温区和低温区，高温区连蒸汽发生器，低温区经回水管连第一循环水泵；本装置通过两级净化去除杂质、吸附回收SO₂，螺旋状导流管强化降温，储热水箱分区实现热能梯级利用，结合智能调控与防泄漏设计，提升SO₂回收效率、热能利用率及安全性，适用于硫磺制酸规模化生产。

Claims

1. A sulfuric acid plant for sulfur-burning, comprising a sulfur-burning furnace (1) provided with an air supply duct (2) on the outside, characterized in that: It also includes a fan (3), a cyclone separator (4), an adsorption cylinder (5), and an improved cooling and recovery assembly (6); the fan (3), the cyclone separator (4), and the adsorption cylinder (5) are connected in sequence to the air supply pipe (2); the improved cooling and recovery assembly (6) includes a spiral guide pipe (61), a hot water storage tank (62), a first circulating water pump (63), and a second circulating water pump (66). The spiral guide pipe (61) runs through the inside of the hot water storage tank (62), and its input end is connected to the air outlet of the adsorption cylinder (5) through the air supply pipe (2). The output end is connected to the air outlet pipe (64). The bottom of the hot water storage tank (62) is provided with a cold water inlet pipe (622) connected to the first circulating water pump (63), and the top is provided with a hot water outlet pipe (623); heat dissipation fins are evenly distributed on the body of the spiral guide pipe (61).

2. A sulphur-burning sulphuric acid plant according to claim 1, characterised in that: The adsorption cylinder (5) is filled with modified activated carbon. The shell adopts a jacket structure and is provided with a jacket layer (51). A first water inlet pipe (53) is provided on the jacket layer (51), which is connected to the hot water outlet pipe (623) of the hot water storage tank (62) through a second circulating water pump (66) and a branch pipe (52).

3. A sulphur-burning sulphuric acid plant according to claim 1, characterised in that: The hot water storage tank (62) is equipped with a temperature partition plate (621) to divide the hot water storage tank (62) into a high temperature zone (A) and a low temperature zone (B). The high temperature zone (A) is connected to the steam generator (65) through the top steam port (625) pipe. The condensate pipe of the steam generator (65) is connected to the second water inlet pipe (626) of the low temperature zone (B). The low temperature zone (B) is connected to the input end of the first circulating water pump (63) through the return water pipe (624), and a filter purification valve is provided on the return water pipe (624).

4. A sulphur-burning sulphuric acid plant according to claim 1, characterised in that: The air outlet pipe (64) is equipped with an online concentration monitor and a flow regulating valve. The high temperature zone (A) and low temperature zone (B) of the hot water storage tank (62) are respectively equipped with temperature sensors. The temperature sensors are electrically connected to the PLC control cabinet. The PLC control cabinet is connected to the first circulating water pump (63), the online concentration monitor, and the flow regulating valve.

5. A sulphur-burning sulphuric acid plant according to claim 1, characterised in that: The connection between the spiral guide pipe (61) and the air supply pipe (2) and the air outlet pipe (64) is sealed with a corrugated compensator. The hot water storage tank (62) is covered with an insulation layer, and a negative pressure gas collection chamber is provided between the insulation layer and the shell of the hot water storage tank (62). The negative pressure gas collection chamber is connected to the external alkaline absorption tower through an exhaust pipe.

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