CN-224212610-U - Lifting and lowering fire path of clean heat recovery coke oven

CN224212610UCN 224212610 UCN224212610 UCN 224212610UCN-224212610-U

Abstract

The utility model discloses a clean type heat recovery coke oven ascending and descending flame path, which comprises carbonization chamber main walls, wherein carbonization chambers are positioned between two adjacent carbonization chamber main walls, descending flame paths, ascending flame paths and air supply pipes are vertically arranged in the carbonization chamber main walls, the descending flame paths and the ascending flame paths are respectively positioned at two sides of the air supply pipes, air supply holes arranged on pipe walls at two sides of the air supply pipes are respectively led to the descending flame paths or the ascending flame paths at the corresponding sides, and flame path guide plates are obliquely arranged on two opposite side walls of the descending flame paths and the ascending flame paths. The flame path guide plates are obliquely and alternately arranged on the inner side walls of the descending flame path and the ascending flame path. The front end of the flame path guide plate extends across the center line of the descending flame path or the ascending flame path. The air supply pipe is formed by stacking air hole bricks. The utility model has the characteristics of uniform heating, excellent coking quality and capability of effectively inhibiting the generation of nitrogen oxides.

Inventors

LIU PENGCHENG
Li Meiding
LI XIANGCHENG
HE ZHONGJUN
XU GUANGPING

Assignees

江苏中磊节能科技发展有限公司

Dates

Publication Date: 20260508
Application Date: 20250526

Claims (6)

1. The ascending and descending fire path of the clean heat recovery coke oven comprises carbonization chamber main walls (1), wherein carbonization chambers (7) are located between two adjacent carbonization chamber main walls (1), and the clean heat recovery coke oven is characterized in that descending fire paths (2), ascending fire paths (3) and air supply pipes (5) are vertically arranged in the carbonization chamber main walls (1), the descending fire paths (2) and the ascending fire paths (3) are respectively located at two sides of the air supply pipes (5), air supply holes (6) arranged on pipe walls at two sides of the air supply pipes (5) are respectively led to the descending fire paths (2) or the ascending fire paths (3) at corresponding sides, and fire path guide plates (4) are obliquely arranged on two opposite side walls of the descending fire paths (2) and the ascending fire paths (3).
2. The ascending and descending flame path of the clean heat recovery coke oven according to claim 1, wherein flame path guide plates (4) are installed on the inner side walls of the descending flame path (2) in a downward inclined staggered manner.
3. The ascending and descending flame path of the clean heat recovery coke oven according to claim 1, wherein flame path guide plates (4) are arranged on the inner side wall of the ascending flame path (3) in an upward inclined and staggered manner.
4. A clean heat recovery coke oven lifting flame path as claimed in claim 1, 2 or 3, wherein the front ends of the flame path guide plates (4) on the opposite side walls of the lifting flame path (3) and the lifting flame path (2) extend through the central line of the lifting flame path (3) or the lifting flame path (2).
5. A cleaning type heat recovery coke oven ascending and descending fire path according to claim 1, 2 or 3 is characterized in that the air supply pipe (5) is formed by stacking air hole bricks (8), a stacking groove is formed in the upper stacking surface of the air hole bricks (8), and a stacking tenon is formed in the lower stacking surface of the air hole bricks (8), and the stacking groove is matched with the stacking tenon.
6. The ascending and descending flue for a clean heat recovery coke oven according to claim 5 wherein the stacking groove is a groove having an inclined groove side and the stacking tenons are tenons having an inclined tenon side.

Description

Lifting and lowering fire path of clean heat recovery coke oven Technical Field The utility model relates to a clean heat recovery coke oven, in particular to a rising flame path and a falling flame path in a carbonization chamber flame path of the clean heat recovery coke oven. Background The clean heat recovery coke oven is a production facility for realizing the coke electric power generation by recovering and conveying negative pressure hot gas to a waste heat boiler in the coking production, and raw gas containing harmful gas is completely burnt at high temperature in the coking process, so that the environmental pollution hazard in the coking process is greatly reduced, and the waste heat resources are fully and comprehensively utilized. The clean heat recovery coke oven mainly comprises a carbonization chamber, an ascending flame path, a descending flame path, a flue, an air inlet and the like, wherein the existing heat recovery coke oven is mainly prepared by adopting a wide carbonization chamber, the coking is large in coke block size and good in heat stability, but the coking chamber which is too wide can influence the heat transfer effect, is overlong in coking time and large in occupied area and is high in investment cost, and the narrowed coking chamber can solve the problem of the heat transfer effect and reduce the occupied area of the coke oven, but the narrowed coking chamber also can bring the height of the carbonization chamber and the ascending flame path and the descending flame path in a main wall of the carbonization chamber to be long, the heat efficiency of the wall surface of the carbonization chamber can be directly influenced by the ascending flame path and the descending flame path, the non-uniformity of the combustible raw gas and the combustion air content can be easily formed in the ascending flame path and the descending flame path, and the raw gas combustion in the ascending flame path is different, so that the heating efficiency and the coke-supporting quality are influenced. The carbonization chamber is narrowed, the flame path is increased in length, the generation of nitrogen oxides is further increased, the flame path is increased in length, local severe combustion is formed in the flame path to generate a high-temperature area, under the high-temperature condition, nitrogen in combustion air can react with oxidation to generate thermal nitrogen oxides, the nitrogen oxides are main pollution sources causing atmospheric pollution, a large amount of emission of the nitrogen oxides can destroy the environment-friendly characteristic of the clean heat recovery coke oven, and the existence of the local high-temperature area in the flame path becomes a main source of coke oven pollutants. Disclosure of Invention Aiming at the defects existing in the prior art, the utility model aims to provide a clean heat recovery coke oven ascending and descending flame path which can uniformly heat and effectively inhibit the generation of nitrogen oxides. In order to solve the technical problems, the lifting flame path of the clean heat recovery coke oven comprises carbonization chamber main walls, wherein the carbonization chambers are positioned between two adjacent carbonization chamber main walls, the carbonization chamber main walls are vertically provided with the lifting flame path, the lifting flame path and an air supply pipe, the lifting flame path and the descending flame path are respectively positioned at two sides of the air supply pipe, air supply holes arranged on pipe walls at two sides of the air supply pipe are respectively led to the lifting flame path or the descending flame path at the corresponding side, and flame path guide plates are obliquely arranged on two opposite side walls of the lifting flame path and the descending flame path. Preferably, the inner side walls of the descending flame paths are provided with flame path guide plates in a downward inclined and staggered mode. Preferably, the inner side walls of the ascending flame paths are provided with flame path guide plates in an upward inclined and staggered mode. Preferably, the front ends of the flame path guide plates on the two opposite side walls of the descending flame path and the ascending flame path extend through the center line of the descending flame path or the ascending flame path. Preferably, the air supply pipe is formed by stacking air hole bricks, a stacking groove is formed in the upper stacking surface of the air hole bricks, a stacking tenon is arranged in the lower stacking surface of the air hole bricks, and the stacking groove is matched with the stacking tenon. Preferably, the stacking groove is a groove having an inclined groove edge, and the stacking tenons are tenons having an inclined tenon edge. In the structure, the descending flame path and the ascending flame path are vertically arranged in the main wall of the carbonization chamber, and are positioned at two sides of the