一种分煤优化的送煤燃烧装置
By using low-calorific-value and high-calorific-value pulverized coal in the decomposition furnace and rotary kiln respectively in cement production, and conveying the coal separately at their respective burners, combined with the gas pipeline and symmetrical burner design, the problems of incomplete combustion and temperature control were solved, and the combustion efficiency and pulverized coal dispersion in the decomposition furnace were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA QINGTONGXIA CEMENT CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-17
AI Technical Summary
In the cement production process, the combustion of mixed high-calorific-value and low-calorific-value coal is unstable, resulting in incomplete combustion in the rotary kiln and decomposition furnace, which affects temperature control and the coal powder dispersion in the decomposition furnace, and reduces thermal efficiency.
Low-calorific-value coal pulverizers for the decomposition furnace and high-calorific-value coal pulverizers for the rotary kiln are used. Coal is transported to its respective burners through independent coal delivery pipelines. High-pressure gas is provided by gas delivery pipelines to ensure that low-calorific-value coal and high-calorific-value coal are burned separately. Symmetrical burners are set at the bottom and top of the decomposition furnace to improve the dispersion of coal powder.
It improves the completeness and thermal efficiency of coal combustion, ensures stable temperature control of the rotary kiln head and the decomposition furnace, and improves the performance of the decomposition furnace.
Smart Images
Figure CN224516825U_ABST
Abstract
Claims
1. A coal distribution and combustion apparatus optimized for coal separation, characterized by, include: The decomposition furnace (6) uses a low-calorific-value coal pulverizer (1) and the rotary kiln (8) uses a high-calorific-value coal pulverizer (2). The coal outlet of the low-calorific-value coal pulverizer (1) is connected to a first coal inlet (3), and the coal outlet of the high-calorific-value coal pulverizer (2) is connected to a second coal inlet (4). The discharge end of the first coal inlet (3) is connected to the burner on the decomposition furnace (6) through a first coal feeding pipe (5), and the discharge end of the second coal inlet (4) is connected to the burner on the rotary kiln (8) through a second coal feeding pipe (7). The decomposition furnace (6) has burners symmetrically arranged at the lower and upper parts of its body, and gas pipes (9) are connected to one side of the first coal feeding pipe (5) and the second coal feeding pipe (7).
2. The coal distribution optimized coal-fired combustion device according to claim 1, characterized by The decomposition furnace (6) has four burners symmetrically arranged at the lower part of its body and two burners symmetrically arranged at the upper part of its body.
3. The coal distribution optimized coal-fired combustion device according to claim 2, characterized by, The first coal feeding pipe (5) includes a main coal feeding pipe (50) and a plurality of branch pipes (51) connected to the main coal feeding pipe (50), and one end of each branch pipe (51) is connected to a corresponding burner.
4. The coal distribution optimized coal-fired combustion device according to claim 1, characterized by Pressure gauges (10) and control valves (11) are also installed on the first coal feeding pipe (5) and the second coal feeding pipe (7).