工业窑炉多级余热回收换热器
By dividing the industrial kiln flue gas waste heat recovery unit into three recovery chambers—high temperature, medium temperature, and low temperature—and configuring different heat exchange elements, the problem of low waste heat recovery efficiency in existing equipment has been solved, and efficient waste heat utilization has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YULI ENERGY SAVING TECH CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing waste heat recovery equipment for industrial kilns suffers from low single-stage recovery efficiency, serious heat waste, inability to adapt to waste heat utilization across the entire temperature range, and inability to achieve tiered utilization at high and low temperatures.
A multi-stage waste heat recovery heat exchanger is adopted, dividing the interior of the outer casing into three recovery chambers: high temperature, medium temperature, and low temperature. Different heat exchange elements, such as ceramic honeycomb panels and serpentine tubes, are used to achieve staged recovery of waste heat from the flue gas. The high-temperature section utilizes ceramic honeycomb panels to recover high-temperature heat, the medium-temperature section extends the heat exchange path through serpentine tubes, and the low-temperature section further utilizes the heat through an outlet plate and L-shaped tubes. The flue gas releases heat step by step during its flow.
It significantly improves waste heat recovery efficiency, adapts to heat exchange needs in different temperature ranges, and achieves efficient and stable waste heat utilization.
Smart Images
Figure CN224517435U_ABST
Abstract
Claims
1. Multi-stage waste heat recovery heat exchanger for industrial furnaces, characterized in that: The enclosure includes an outer casing (1), which is divided by a partition (12) into a high-temperature recovery chamber (11) on the left, a medium-temperature recovery chamber (13) in the middle, and a low-temperature recovery chamber (14) on the right. The high-temperature recovery chamber (11) is equipped with several vertically arranged ceramic honeycomb panels (110). The medium-temperature recovery chamber (13) is equipped with several parallel serpentine tubes (130). One of the serpentine tubes (130) is connected to the interior of the high-temperature recovery chamber (11) on the left through a connecting pipe (131). The low-temperature recovery chamber (14) is equipped with an air outlet plate (140) near the bottom. An L-shaped pipe (144) connected to the right side of one of the serpentine tubes (130) is installed on the air outlet plate (140). An air inlet pipe (2) is installed on the outer wall of the left side of the outer casing (1).
2. The multi-stage waste heat recovery heat exchanger for industrial kilns as claimed in claim 1 wherein: The outer casing (1) is hinged to a cover (10) on the front side of the high temperature recovery chamber (11). A handle (100) is installed on the cover (10). A diversion plate (112) is fixedly installed inside the high temperature recovery chamber (11) near the left side.
3. The multi-stage waste heat recovery heat exchanger for industrial furnaces as claimed in claim 2 wherein: The high-temperature recovery chamber (11) is equipped with two symmetrical support blocks (111) on both sides of each ceramic honeycomb panel (110). The support blocks (111) are fixed to the top and bottom inner walls of the outer casing (1), respectively.
4. The multi-stage waste heat recovery heat exchanger for industrial furnaces as claimed in claim 3 wherein: The top of the vent plate (140) has several vent holes, and the top of the vent plate (140) near the left side has an integrally formed top pipe (141) that communicates with the L-shaped pipe (144).
5. The multi-stage waste heat recovery heat exchanger for industrial kilns as described in claim 4, characterized in that: The outer casing (1) is equipped with an exhaust pipe (5) above both the medium-temperature recovery chamber (13) and the low-temperature recovery chamber (14), and an exhaust valve (50) is installed on the exhaust pipe (5).
6. The multi-stage waste heat recovery heat exchanger for industrial furnaces as claimed in claim 5 wherein: The outer casing (1) is threaded with a sealing cover (4) above both the medium-temperature recovery chamber (13) and the low-temperature recovery chamber (14).
7. The multi-stage waste heat recovery heat exchanger for industrial furnaces as claimed in claim 6 wherein: A connecting pipe (6) is installed on the outer casing (1). The two ends of the connecting pipe (6) are connected to the medium temperature recovery chamber (13) and the low temperature recovery chamber (14) respectively. The pipe extends to the top of the air outlet plate (140) at one end of the low temperature recovery chamber (14). The connecting pipe (6) passes around the top of the outer casing (1) and a water pump (60) is installed on it.
8. The multi-stage waste heat recovery heat exchanger for industrial furnaces as claimed in claim 7 wherein: Each of the four corners of the bottom of the outer casing (1) is fixedly installed with a support leg (3).