一种炭素焙烧炉烟气净化处理及余热利用系统
By setting up a system consisting of a regenerative incinerator, a waste heat boiler, a desulfurization tower, and a denitrification reaction tower, the problems of difficult flue gas treatment and waste heat recovery in carbon roasting furnaces were solved, achieving flue gas purification and waste heat utilization, reducing fuel consumption, and improving economic efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOMA ENERGY CONSERVATION
- Filing Date
- 2025-04-23
- Publication Date
- 2026-07-17
AI Technical Summary
The flue gas emitted from carbon roasting furnaces has a complex composition, containing particulate matter, sulfur oxides, nitrogen oxides, combustible substances, etc., which makes it difficult to treat and waste heat recovery, resulting in waste heat.
The system, consisting of a regenerative thermal incinerator, a waste heat boiler, a desulfurization tower, a dust collector, and a denitrification reaction tower, preheats and combusts the flue gas in the regenerative thermal incinerator, recovers heat in the waste heat boiler, removes sulfur oxides in the desulfurization tower, removes dust in the dust collector, and removes nitrogen oxides in the denitrification reaction tower, thereby achieving flue gas purification and waste heat utilization.
It effectively removes harmful substances from flue gas, recovers waste heat from flue gas, reduces fuel consumption, improves economic efficiency, simplifies system processes, reduces equipment blockage, and avoids waste of waste heat.
Smart Images
Figure CN224517438U_ABST
Abstract
Claims
1. A system for purifying and utilizing waste heat from carbon roasting furnace flue gas, characterized in that: The system comprises an incinerator, a waste heat boiler, a desulfurization tower, a dust collector, a denitrification reaction tower, an induced draft fan, an ash conveyor, and a chimney. One path of the system sequentially processes the flue gas discharged from the calcination furnace through the incinerator, waste heat boiler, desulfurization tower, dust collector, denitrification reaction tower, and induced draft fan; the other path sequentially collects flue gas dust through the waste heat boiler, desulfurization tower, dust collector, denitrification reaction tower, and ash conveyor. The incinerator consists of a first regenerator and a second regenerator; both the first and second regenerators are equipped with… It has a heat storage body; both the first heat storage chamber and the second heat storage chamber are equipped with a combustion chamber and a flue gas chamber; the combustion chamber of the first heat storage chamber is connected to the combustion chamber of the second heat storage chamber through a gas passage; a burner is installed in the gas passage; a first air inlet passage and a first air outlet passage are connected to the flue gas chamber of the first heat storage chamber; a second air inlet passage and a second air outlet passage are connected to the flue gas chamber of the second heat storage chamber; each of the first air inlet passage, the first air outlet passage, the second air inlet passage, and the second air outlet passage is equipped with an electric valve.
2. The carbon baking furnace flue gas purification treatment and waste heat utilization system according to claim 1, characterized in that: The incinerator's process of preheating the roasting flue gas and recovering the heat from the combusted roasting flue gas includes: When the valve on the first air inlet channel is open and the valve on the first air outlet channel is closed, and the valve on the second air inlet channel is closed and the valve on the second air outlet channel is open, the roasting flue gas enters the first heat storage chamber and is heated by the combustion of external gas before entering the second heat storage chamber, heating the heat storage body in the second heat storage chamber, and then being discharged from the second air inlet channel. At this time, the heat storage body in the second heat storage chamber stores the heat of the flue gas. When the temperature of the heat storage body in the second heat storage chamber rises to the upper limit of the temperature, the valve on the first air inlet channel closes and the valve on the first air outlet channel opens. The valve on the second air inlet channel opens and the valve on the second air outlet channel closes. Then, the roasting flue gas enters the second heat storage chamber, exchanges heat with the heat storage body in the second heat storage chamber, and its temperature rises. Then, it enters the combustion chamber to be heated and burned by the external gas. After that, it exchanges heat with the heat storage body in the first heat storage chamber and is then discharged from the first exhaust channel.
3. The carbon baking furnace flue gas purification treatment and waste heat utilization system according to claim 1, characterized in that: The waste heat boiler adopts a vertical structure.
4. The carbon baking furnace flue gas purification treatment and waste heat utilization system according to claim 1, characterized in that: The desulfurization tower adopts a dry sodium bicarbonate desulfurization process.
5. The carbon roasting furnace flue gas purification and waste heat utilization system according to claim 1, characterized in that: The dust collector is a bag-type structure, consisting of a clean air chamber, a filter chamber, and a dust hopper. The clean air chamber is separated from the filter chamber by a tube sheet. An ammonia spray nozzle is installed in the clean air chamber. A bag cage is installed in the filter chamber, and a filter bag made of fibrous material is installed on the bag cage. A guide plate is installed in the dust hopper.