预处理系统和尾气焚烧系统
By using a cyclone separator and an alkaline scrubbing tower for multi-stage purification of exhaust gas in titanium dioxide production, the corrosion and blockage problems of acidic droplets and solid impurities in the exhaust gas on the incineration desulfurization system have been solved, achieving safe and stable operation and improved efficiency of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN BILLIONS NEW MATERIAL CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-07-17
AI Technical Summary
In the titanium dioxide production process, improperly treated chlorination condensate tail gas can lead to corrosion and blockage of the incineration desulfurization system, affecting the safe operation of the system.
At least two acid removal devices are used for tail gas pretreatment, including a cyclone separator and an alkaline scrubbing tower. Through multi-stage purification, acidic droplets and solid impurities are removed, reducing the risk of them entering the incineration desulfurization system.
It effectively reduces the risk of corrosion and blockage in the burner and downstream heat exchanger, improves heat exchange efficiency, increases steam production, and ensures the safe operation of the incineration desulfurization system.
Smart Images
Figure CN224506710U_ABST
Abstract
Claims
1. A pretreatment system, characterized by, It includes at least two acid removal devices, each having an inlet and a gas phase outlet; In two adjacent acid removal devices, the gas phase outlet of the preceding acid removal device is connected to the gas phase outlet of the following acid removal device; Of all the acid removal equipment, the inlet of the first acid removal equipment is used to introduce exhaust gas, and the gas phase outlet of the last acid removal equipment is used to connect to the incineration desulfurization system.
2. The pre-treatment system of claim 1, wherein, The acid removal device located at the front is a cyclone separator (10).
3. The preprocessing system according to claim 2, characterized in that, The cyclone separator (10) is made of fiberglass and lined with polypropylene.
4. The pretreatment system of claim 2, wherein, The cyclone separator (10) is provided with a flushing port (11) and a liquid discharge sight glass observation port (12).
5. A pretreatment system according to any of claims 2-4, characterized in that The bottom ash discharge port of the cyclone separator (10) is connected to the settling tank (60).
6. The pretreatment system of claim 5, wherein, The settling tank (60) has a partition, the height of which is less than the depth of the settling tank (60). The partition divides the internal space of the settling tank (60) into a settling zone (61) and an overflow zone (62). The ash discharge port is connected to the settling zone (61).
7. The pretreatment system of claim 6, wherein, The overflow area (62) is connected to the pulping and washing unit via a transfer pump (70).
8. The pretreatment system of claim 5, wherein, The ash discharge port is connected to the sedimentation tank (60) in sequence through a quick-release filter (40) and a lower liquid water seal pipe (50).
9. The pretreatment system of claim 1, wherein, The acid removal device located at the very end is an alkaline scrubbing spray tower (30) containing three layers of alkaline solution.
10. An off-gas incineration system characterized by, The system includes the pretreatment system and the incineration desulfurization system as described in any one of claims 1-9, wherein the gas phase outlet of an acid removal device located at the last side is connected to the incineration desulfurization system.