Converter flue gas cooling system
By designing two converters to share a cooling equipment and using gate valves to control the flow direction of the flue gas, the corrosion problem of the converter flue gas cooling system at low temperatures is solved, the equipment life is extended, the maintenance cost is reduced, and the production efficiency is improved.
Patent Information
- Application Number
- CN202421180902.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-28
AI Technical Summary
Existing converter flue gas cooling systems are prone to corrosion at low temperatures, and equipment needs to be replaced frequently, resulting in increased production costs and impacted production benefits.
Design a converter flue gas cooling system, in which two converters share a set of cooling equipment, which is connected to the furnace cover through the horizontal flue heat exchange surface, and uses gate valves to control the flow direction of the smoke gas, and suspend the entire set of equipment on the top of the steel frame to avoid low temperatures Corrosion and equipment cooling.
It achieves long-term safe and stable operation of the equipment, reduces equipment maintenance and investment costs, extends the service life of the equipment, and improves production efficiency.
Smart Images
Figure CN222352920U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a flue gas treatment system, in particular to a converter flue gas cooling system in a pyrometallurgical copper smelting process. Background Art
[0002] The converter is a process equipment in the nonferrous metallurgical blowing process, usually in a one-in-use and one-in-standby operation mode. The converter in operation will go through three stages: copper pouring, slag discharge, and matte loading. During smelting, high-temperature flue gas of more than 1,000 degrees is produced, and the flue gas also contains SO 2 Corrosive gases and a lot of smoke. In order to meet the process requirements, a cooling system must be configured to reduce the smoke temperature to a suitable temperature before it can enter the subsequent process equipment.
[0003] The main function of the cooling system is to cool the flue gas to meet the needs of process production. At the same time, heat energy is recovered, and the recovered heat energy is used for production to improve the overall economic benefits. Usually, a converter is equipped with a flue gas cooling system. Since the flue gas contains corrosive gases and smoke, the inner wall of the heat exchange surface is thickly adhered to smoke, and low-temperature corrosion is inevitable during cold standby. Some equipment is almost scrapped after a few months of cold standby. When it is used again, it must be remanufactured and installed, which increases production costs and affects production benefits. Therefore, the cooling system must consider avoiding low-temperature corrosion and smoke collection and treatment. Summary of the invention
[0004] Based on this, the purpose of the utility model is to provide a converter flue gas cooling system, which avoids the existence of standby equipment by sharing a set of cooling equipment for two converters, reduces the floor space and equipment investment, and narrows the equipment standby range, thereby avoiding low-temperature corrosion of the standby converter cooling equipment.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:
[0006] A converter flue gas cooling system comprises a first converter, a second converter and a first furnace hood and a second furnace hood respectively arranged thereon, characterized in that the first converter and the second converter are connected to a horizontal flue heat exchange surface through the first furnace hood and the second furnace hood respectively, a smoke outlet A and a smoke outlet B are respectively arranged at both ends of the horizontal flue heat exchange surface, a gate valve A and a gate valve B are respectively arranged at the connection between the first furnace hood, the second furnace hood and the horizontal flue heat exchange surface, and a gate valve C and a gate valve D are respectively arranged between the horizontal flue heat exchange surface and the smoke outlet A and the smoke outlet B.
[0007] Furthermore, an ash hopper is provided at the lower part of the horizontal flue heat exchange surface, and a scraper is buried at the bottom of the ash hopper.
[0008] Furthermore, the entire converter flue gas cooling system is suspended on the top beam of the steel frame by a hanger.
[0009] The converter of the converter flue gas cooling system of the utility model uses a one-in-use and one-in-standby mode, and only one converter is always in working state. The whole equipment is suspended on the top crossbeam of the steel frame by a hanger. The high-temperature flue gas discharged from the first converter or the second converter in working state passes through the first furnace cover or the second furnace cover to enter the horizontal flue heat exchange surface for cooling, and then is discharged from the smoke outlet A or the smoke outlet B to enter the subsequent process equipment.
[0010] Beneficial effects of the utility model: The utility model converter flue gas cooling system realizes that one set of cooling equipment meets the process requirements of two converters, which can not only reduce the floor space and equipment investment, but also reduce the equipment cold standby range. It avoids low-temperature corrosion of spare converter cooling equipment, prolongs the service life of equipment, reduces equipment maintenance funds, ensures long-term safe and stable production, and thus improves comprehensive production benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a side view of a converter flue gas cooling system of the utility model;
[0012] Figure 2 This is a front view of a converter flue gas cooling system of the utility model;
[0013] Figure 3 This is a top view of a converter flue gas cooling system of the utility model;
[0014] In the figure: 1, the first converter, 2, the first furnace cover, 3, the second converter, 4, the second furnace cover, 5, the horizontal flue heat exchange surface, 6, the smoke outlet A, 7, the smoke outlet B, 8, the gate valve A, 9, the gate valve B, 10, the gate valve C, 11, the gate valve D, 12, the ash hopper, 13, the scraper, 14, the steel frame, 15, the suspension rod. DETAILED DESCRIPTION
[0015] The following describes in detail the implementation of the utility model in conjunction with the accompanying drawings. The utility model can be applied to a copper smelting converter blowing process system, where a set of cooling equipment cools high-temperature flue gas from two converters.
[0016] A converter flue gas cooling system comprises: a first converter 1, a second converter 3 and a first furnace hood 2 and a second furnace hood 4 respectively arranged thereon, characterized in that: the first converter 1 and the second converter 3 are connected to a horizontal flue heat exchange surface 5 through the first furnace hood 2 and the second furnace hood 4 respectively, a smoke outlet A6 and a smoke outlet B7 are respectively arranged at both ends of the horizontal flue heat exchange surface 5, a gate valve A8 and a gate valve B9 are respectively arranged at the connection between the first furnace hood 2, the second furnace hood 4 and the horizontal flue heat exchange surface 5, and a gate valve C10 and a gate valve D11 are respectively arranged between the horizontal flue heat exchange surface 5 and the smoke outlet A6 and the smoke outlet B7.
[0017] Furthermore, an ash hopper 12 is provided at the lower part of the horizontal flue heat exchange surface 5 , and a scraper 13 is buried at the bottom of the ash hopper 12 .
[0018] Furthermore, the entire converter flue gas cooling system is suspended on the top beam of the steel frame 14 by using a hanger 15 .
[0019] The working process when the first converter 1 is in operation and the second converter 3 is in cold standby is as follows:
[0020] Close gate valve B9 and gate valve C 10, and open gate valve A8 and gate valve D11 at the same time.
[0021] The high-temperature flue gas is discharged from the outlet of the first converter 1 into the first furnace cover 2, turns 90 degrees and enters the horizontal flue heat exchange surface 5. After heat exchange, the flue gas temperature is reduced to the required temperature and is discharged from the flue outlet B7 into the subsequent process equipment.
[0022] The working process when the second converter 3 is in operation and the first converter 1 is in cold standby is as follows:
[0023] Close gate valve A8 and gate valve D11, and open gate valve B9 and gate valve C 10 at the same time.
[0024] The high-temperature flue gas is discharged from the outlet of the second converter 3 into the second furnace cover 4, turns 90 degrees and enters the horizontal flue heat exchange surface 5. After heat exchange, the flue gas temperature is reduced to the required temperature and is discharged from the flue outlet A6 into the subsequent process equipment.
[0025] The above contents are further detailed descriptions of the utility model in combination with specific preferred implementations, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, if several equivalent substitutions or obvious modifications are made without departing from the concept of the utility model, and the performance or use is the same, it should be deemed to fall within the scope of protection determined by the claims submitted for the utility model.
Claims
1. A converter flue gas cooling system, comprising: The first converter, the second converter and the first furnace cover and the second furnace cover respectively arranged thereon are characterized in that: the first converter and the second converter are connected to the horizontal flue heat exchange surface through the first furnace cover and the second furnace cover respectively, and smoke outlets A and B are respectively arranged at both ends of the horizontal flue heat exchange surface, and gate valves A and gate valves B are respectively arranged at the connection between the first furnace cover, the second furnace cover and the horizontal flue heat exchange surface, and gate valves C and gate valves D are respectively arranged between the horizontal flue heat exchange surface and the smoke outlets A and B.
2. A converter flue gas cooling system according to claim 1, characterized in that: An ash hopper is provided at the lower part of the horizontal flue heat exchange surface, and a scraper is buried at the bottom of the ash hopper.
3. A converter flue gas cooling system according to claim 1, characterized in that: The entire converter flue gas cooling system is suspended on the top beam of the steel frame by a hanger.