A carbon rotary kiln calcining flue gas purification system and purification method thereof
By adopting ammonia-spraying denitrification, desulfurization tower and spray dust removal device in the carbon rotary kiln flue gas purification system, combined with the flue gas heat exchange and recovery technology of waste heat boiler and thermal oil heating device, the problems of incomplete flue gas purification and inefficient waste heat recovery in the existing system are solved, and efficient flue gas purification and energy-saving and environmentally friendly effects are achieved.
CN108088271BActive Publication Date: 2025-03-18BEIJING LUNENG QINGXIN ENVIRONMENTAL TECH CO LTD
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Patent Information
- Application Number
- CN201711325627.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2017-12-13
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2037-12-13
AI Technical Summary
Technical Problem
The existing carbon rotary kiln flue gas purification system is difficult to effectively denitrify, desulfurize and dust removal, and the waste heat recovery and utilization are not efficient enough, resulting in poor environmental protection and energy-saving effects.
Method used
采用喷氨脱硝装置、脱硫塔装置和喷淋除尘装置对回转窑烟气进行脱硝、脱硫和除尘处理，并通过余热锅炉和导热油加热装置进行烟气换热回收热量。
Benefits of technology
Effective denitrification, desulfurization and dust removal of flue gas have been achieved, waste heat recovery and utilization rate have been improved, and the dual goals of environmental protection and energy conservation have been achieved.
✦ Generated by Eureka AI based on patent content.
Abstract
A carbon rotary kiln calcining flue gas purification method and purification system, the system comprising a rotary kiln (1), a cooling kiln (13), a tail gas recovery device, a high-temperature settling chamber (2), a tubular heat exchange device (3), an ammonia spray denitrification device (4), a waste heat boiler (5), a spray dust removal device (7), a desulfurization tower device (10), a thermal oil heating device (6), a plate and frame filter (9), a smoke exhaust fan (11) and a chimney (12), etc. The flue gas discharged from the rotary kiln (1) of the system first passes through a high-temperature settling chamber (2) for dust removal, and then is initially cooled to a temperature of ≤950°C by a tubular heat exchanger (3). The flue gas enters an ammonia spray denitrification reactor (4), and then is heat recovered by a waste heat boiler (5) and a thermal oil heating device (6). The tail gas of the waste heat boiler (5), the tail gas of the thermal oil system (6) and the cooling flue gas of the cooling kiln (13) are combined into a spray dust removal device (7), a desulfurization tower device (10), and the flue gas that meets the standards is finally sent to a smoke exhaust pipe (12) by a smoke exhaust fan (11) for exhaust.
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