A device for absorbing sulfur trioxide in oleum
CN224686569UActive Publication Date: 2026-08-28QINGHAI TONGXIN CHEM
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Patent Information
- Application Number
- CN202521984020.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-09-16
AI Technical Summary
Technical Problem
吸收效率低：三氧化硫气体与吸收液接触不充分，导致部分气体未被吸收而逸出；循环系统稳定性差：单一循环泵易因故障导致喷淋中断，影响吸收连续性；补液控制不精准：多依赖人工补液，易因液位波动导致吸收效果不稳定；处理连续性不足：单一发烟硫酸储罐连接方式难以满足多储罐同时挥发的三氧化硫处理需求
Benefits of technology
[0011]本实用新型的有益效果为：通过设置并联的循环泵A和循环泵B，实现一用一备，当其中一个循环泵故障时，另一个可立即投入使用，避免喷淋中断，保证吸收过程连续稳定；吸收循环槽内的液位计与补液管线上的切断阀通过PLC控制器联动，可根据液位自动启停补液，解决人工补液的滞后性和误差问题，确保吸收液液位稳定，提升吸收效率；发烟硫酸储罐设置2个以上，通过分支管线与气相主管线连接，可同时处理多个储罐挥发的三氧化硫气体，分支管线上的常开球阀保证气相输送畅通，适应规模化生产需求；吸收塔通过喷淋头实现吸收液均匀喷洒，与三氧化硫气体逆向接触；未被吸收的气体通过气相管线进入吸收循环槽二次吸收，微量残余气体经出气管线进入98%硫酸储罐深度处理，减少环境污染。
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Figure CN224686569U_ABST
Abstract
The utility model discloses a kind of fuming sulfuric acid sulfur trioxide absorption devices, including absorption tower, fuming sulfuric acid storage tank, 98% sulfuric acid storage tank, absorption circulating tank and circulating pump, fuming sulfuric acid storage tank is connected to the middle part of absorption tower by gas phase main pipeline, absorption tower top is connected to the top of 98% sulfuric acid storage tank by gas outlet pipeline, absorption tower bottom is connected to absorption circulating tank by liquid outlet pipeline, absorption tower middle lower part is connected to absorption circulating tank by gas phase pipeline, absorption circulating tank top is connected to 98% sulfuric acid storage tank by liquid supplementing pipeline, cut-off valve is provided on liquid supplementing pipeline, liquid level meter is provided in absorption circulating tank, liquid level meter and cut-off valve are electrically connected, and the opening and closing of cut-off valve is controlled;Absorption circulating tank is connected to the upper part of absorption tower by spraying liquid pipeline, and circulating pump is arranged on spraying liquid pipeline.The utility model absorption process is continuous and stable, can automatically start and stop liquid supplementing according to liquid level, solve the hysteresis and error problem of manual liquid supplementing, ensure that absorption liquid level is stable, and improve absorption efficiency.
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