CN-121994020-A - Converter with side flue

CN121994020ACN 121994020 ACN121994020 ACN 121994020ACN-121994020-A

Abstract

The invention relates to the technical field of converter flue gas treatment equipment, and discloses a converter with a side flue, which comprises a converter body, a combustion system, a side flue body and a dust collection system, wherein the combustion system is arranged at the front end of the converter body, a converter material inlet is arranged in the middle of the converter body, a converter flue gas outlet is arranged at the rear end of the converter body, the converter flue gas outlet is communicated with the side flue body through a rotary cylinder, the upper end of the side flue body is connected with the dust collection system through a dust collection flue pipe, and the dust collection system is used for carrying out subsequent purification treatment on collected flue gas. According to the invention, the converter flue gas outlet is independently arranged at the end part of the converter body and separated from the charging port and the discharging port, so that the mixing of flue gas, materials and slag is avoided, the collection purity of the flue gas is improved, the subsequent treatment difficulty is reduced, the converter flue gas outlet is always in butt joint with the side flue when the converter body rotates, the continuous collection of the flue gas is realized, the unorganized emission is stopped, the heat loss is reduced, and the energy consumption is reduced.

Inventors

ZHANG YUNLIANG
WANG CHENGUANG
LIU LIBO
LI HONGYING
DONG WENPENG
WANG JIANGANG
LUO ZHIDAN
ZHOU YU
MA JING
ZHANG TIANYU

Assignees

呼伦贝尔驰宏矿业有限公司

Dates

Publication Date: 20260508
Application Date: 20260205

Claims (10)

1. A converter with a side flue is characterized by comprising a converter body, a combustion system, a side flue body and a dust collection system, wherein the converter body is of a horizontal cylinder structure, the combustion system is arranged at the front end of the converter body and is used for providing a heat source for smelting in the converter body, a converter material inlet is arranged in the middle of the converter body and is used for feeding and discharging slag or molten metal after smelting is completed, a converter flue gas outlet is arranged at the rear end of the converter body and is communicated with the side flue body through a matched rotary cylinder, a side flue channel used for collecting and transmitting flue gas discharged from the converter body is formed in the side flue body, the front end of the rotary cylinder is directly fixedly connected with a rear end cover of the converter body with the converter flue gas outlet, the rear end of the rotary cylinder is rotatably embedded in a circular side flue connecting port of the side flue body, the rotary cylinder is in sealing connection with the circular side flue connecting port, and an induced draft fan is arranged in the side flue body through a dust collection flue pipe connecting system.
2. The converter with side flue according to claim 1, wherein the rotating cylinder is lined with refractory material and a high temperature resistant flexible packing is filled between the rotating cylinder and the inner wall of the circular side flue connection port of the side flue body, and is continuously compressed by a gland positioned outside the circular side flue connection port and the outer wall of the rotating cylinder.
3. The converter with the side flue according to claim 1, wherein the outer layer of the side flue body is of a molten steel sleeve structure, the inner wall of the molten steel sleeve structure is lined with refractory materials, a side flue channel in the side flue body is of a rectangular square frame structure, the molten steel sleeve structure comprises a side flue main body water sleeve and a side flue top water sleeve, the lower end of a dust collection flue pipe is in sealing connection with a flue gas outlet formed in the middle of the side flue top water sleeve, the upper end of the dust collection flue pipe is in sealing connection with a flue gas inlet pipe of the dust collection system, and a water sleeve water inlet pipe and a water outlet pipe are further arranged on the side flue top water sleeve.
4. A converter with side flue according to claim 3, wherein, when in installation, the lower end of the dust collecting flue pipe extends into the flue gas outlet arranged in the middle of the top water jacket of the side flue, the sealing filler is filled in the formed connecting gap, the sealing gasket is used for realizing the initial sealing between the top water jacket flue gas outlet flange and the dust collecting flue pipe flange, and finally the two corresponding flanges are connected into a whole by welding.
5. The converter with the side flue according to claim 3, wherein the dust collection flue pipe is a water-cooled element and is obliquely connected to the top water jacket of the side flue, an installation angle of 35-60 degrees is formed between the dust collection flue pipe and the top plane of the top water jacket of the side flue, and a supporting member for supporting and fixing the dust collection flue pipe is arranged above the top water jacket of the side flue.
6. The converter with side flue according to claim 1, wherein the front face of the side flue body is further provided with an inspection manhole for inspection, inspection and daily production dust cleaning.
7. The converter with the side flue according to claim 1, wherein the converter body is driven by a rotation control system to rotate, the rotation control system comprises a driving motor, a speed reducer connected with the driving motor and a pinion arranged on an output shaft of the speed reducer, a large gear ring which is meshed with the pinion in an adaptive manner is fixedly arranged on the periphery of the converter body in a surrounding mode, the pinion rotates to drive the large gear ring and the whole converter body to rotate, and the rotating cylinder body rotates coaxially with the converter body.
8. A converter with side flues according to claim 1, characterized in that the exterior of the converter body is provided with roller supports for guiding the converter body in a circular motion along a fixed trajectory and for providing support for the converter body during rotation.
9. The converter with a side flue according to claim 1, wherein the combustion system is further provided with an air or oxygen-enriched combustion system, and the smelting temperature in the converter is precisely controlled by adjusting the oxygen concentration and the fuel supply.
10. A converter with a side flue according to claim 1, wherein the outer layer of the converter body is a steel shell, the inner wall of the steel shell is lined with refractory material, and the converter mouth in the middle of the converter body is integrally built by refractory material in the converter body.

Description

Converter with side flue Technical Field The invention relates to the technical field of converter flue gas treatment equipment, in particular to a converter with a side flue. Background In the converter smelting production process, a large amount of flue gas containing dust, carbon monoxide and other components can be continuously generated, and the flue gas needs to be effectively collected and treated at any time so as to avoid polluting the environment and recycle useful resources. The side flue is used as an important part for collecting and guiding the flue gas of the converter, and the structural design of the side flue directly influences the efficiency of flue gas collection and the effect of subsequent treatment. However, the existing converter side flue has the problems of unreasonable structural design, unsmooth flue gas guiding, inconvenient overhauling and maintenance and the like, and influences the overall performance of converter flue gas treatment. The existing side flue of the converter has the following problems: 1. The conventional structure of the converter comprises a converter barrel, a rotating structure, a feeding and discharging port, a smoke port, a combustion system and the like, wherein the smoke port is arranged in the middle of the converter barrel and shares an outlet with the feeding and discharging port, the smoke is collected by materials and slag due to functional cross, the collection efficiency is low, and the smoke port can synchronously rotate along with the barrel when the converter barrel rotates due to the fact that the conventional converter is only provided with the smoke port, when the converter performs operations such as feeding, smelting angle adjustment and the like, the smoke port cannot be stably butted with a dust collecting system, the smoke collection is interrupted, the emission is serious without tissues, and meanwhile, a large amount of heat loss is caused, and the energy consumption is increased. 2. The traditional converter side flue and dust collection system has simple connection structure design, no effective sealing measure is adopted at the interface of the converter flue and the dust collection system, so that the leakage of smoke is easy to occur, the design of the flow field in the converter flue is unreasonable, the smoke flow resistance is high, dust is easy to deposit, the dust collection efficiency is low, and the environmental protection emission standard is difficult to meet. 3. The traditional converter is not provided with a convenient maintenance channel in the side flue, when the inside of the flue fails, maintenance staff cannot quickly and safely clean and maintain, equipment downtime is prolonged, and production progress is affected. Disclosure of Invention In view of the above, the present invention provides a converter with a side flue, which aims to solve the technical problems in the prior art. In order to achieve the above purpose, the invention adopts the following technical scheme: A converter with a side flue comprises a converter body, a combustion system, a side flue body and a dust collection system, wherein the converter body is of a horizontal cylinder structure, the combustion system is arranged at the front end of the converter body and is used for providing a heat source for smelting in the converter body, a furnace charge port is arranged in the middle of the converter body and is used for charging and discharging slag or molten metal after smelting is completed, a converter flue gas outlet is arranged at the rear end of the converter body and is communicated with the side flue body through a matched rotary cylinder, a side flue channel used for collecting and transmitting flue gas discharged from the converter body is formed in the side flue body, the front end of the rotary cylinder is directly fixedly connected with a rear end cover of the converter body with the converter flue gas outlet, the rear end of the rotary cylinder is rotatably embedded in a circular side flue connecting port of the side flue body, the rotary cylinder is in sealing connection with the circular side flue connecting port, the upper end of the side flue body is connected with the dust collection system through a dust collection flue pipe, the system is used for carrying out subsequent purification treatment on the collected flue gas, and a draught fan is arranged in the dust collection system. Preferably, the rotary cylinder body is lined with refractory materials, and high-temperature-resistant flexible filler is filled between the rotary cylinder body and the inner wall of the circular side flue connecting port of the side flue body, and is continuously compressed by a gland positioned at the outer side of the circular side flue connecting port and the outer wall of the rotary cylinder body. The outer layer of the side flue body is preferably of a molten steel sleeve structure, the inner wall of the molten steel sleeve structure is