Dry quenching device introducing pulse bag type dust collector as standby secondary dust collector
By introducing a pulse bag dust collector as a backup secondary dust collector in the dry coke quenching device, the problem that the secondary dust collector cannot effectively separate the micro-particle coke powder when the load is increased or the fault is malfunctioned in the prior art, achieving more efficient dust removal effect and system stability.
Patent Information
- Application Number
- CN202420684835.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-04-03
AI Technical Summary
In existing dry coking quenching devices, the secondary dust collector cannot effectively separate the micro-particle coke powder in the circulating gas when the load increases or fails, resulting in wear of the circulating fan and system failure.
A pulse bag dust collector is introduced as a backup secondary dust collector, and a second dust collector is added to cooperate with the operation of the pulse bag dust collector to ensure that when the cyclone dust collector fails, it can be replaced and dust removal in a timely manner.
Through the use of pulse bag dust collector, it can effectively separate the micro-particle coke powder in the circulating gas, extend the service life of the circulating fan and the circulating pipeline, and ensure the stable operation of the dry coke quenching system.
Smart Images
Figure CN222809401U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coke dry quenching devices, in particular to a coke dry quenching device which introduces a pulse bag dust collector as a spare secondary dust collector. Background Art
[0002] Coke dry quenching is a method of cooling red coke using low-temperature inert gas. The coke dry quenching device is mainly composed of a dry quenching furnace, a primary dust collector, a boiler, a secondary dust collector, a circulating fan, a heat pipe heat exchanger, etc. During the dry quenching process, red coke is loaded from the top of the dry quenching furnace, and the low-temperature inert gas is blown into the red coke layer in the cooling chamber of the dry quenching furnace by the circulating fan to absorb the heat of the red coke. The cooled coke is discharged from the bottom of the dry quenching furnace, and the high-temperature inert gas coming out of the annular flue of the dry quenching furnace is heat exchanged through the dry quenching boiler, and the boiler generates steam. The cooled inert gas is blown back into the dry quenching furnace by the circulating fan for recycling.
[0003] In this system, the secondary dust collector is an important device before entering the circulating fan, and the core device of gas circulation is the circulating fan. In the prior art, the cyclone dust collector (i.e., the secondary dust collector) can separate 5-30μm coke powder from the circulating gas, but if the circulating gas volume fluctuates greatly, the load of the secondary dust collector increases, causing the dust concentration in the circulating gas to fail to meet the standard, or when the equipment fails, the coke powder directly rubs and rubs the circulating fan blades excessively for a long time, and the dynamic balance between the blades will change, which will affect the life of the circulating fan. In severe cases, it may cause the fan to wear and leak or the circulating air duct to be blocked, causing the dry quenching furnace to stop production.
[0004] Therefore, there is an urgent need in the art for a coke dry quenching device that introduces a pulse bag dust collector as a backup secondary dust collector to solve the above-mentioned problems. Utility Model Content
[0005] The utility model aims to provide a dry quenching coke device which introduces a pulse bag dust collector as a spare secondary dust collector to solve the problems existing in the above-mentioned prior art, and to add a pulse bag dust collector to reduce the working pressure of the cyclone dust collector, ensure the dust removal effect and improve work efficiency.
[0006] To achieve the above purpose, the utility model provides the following solutions:
[0007] The utility model provides a dry quenching coke device which introduces a pulse bag dust collector as a spare secondary dust collector, comprising a dry quenching furnace and a circulation pipeline, wherein an air inlet end of the circulation pipeline is connected to a hot air outlet of the dry quenching furnace, and an air outlet end of the circulation pipeline is connected to a cold air inlet of the dry quenching furnace, and the circulation pipeline passes through a primary dust collector, a boiler, a secondary dust removal system and a circulation fan in sequence, and the secondary dust removal system comprises a first dust removal pipeline and a second dust removal pipeline which are connected in parallel with each other, a first control valve and a cyclone dust collector are arranged on the first dust removal pipeline, and a second control valve and a pulse bag dust collector are arranged on the second dust removal pipeline.
[0008] Preferably, the first control valve and the second control valve are both electrically controlled valves, and a dust concentration sensor is provided at the air inlet of the circulating fan.
[0009] Compared with the prior art, the utility model has achieved the following technical effects:
[0010] The utility model adds a pulse bag dust collector to the secondary dust removal system. When the dust removal effect of the cyclone dust collector is reduced or damaged, the pulse bag dust collector can be replaced in time for dust removal. The problem of wear of the circulating fan due to the dust removal effect of the cyclone dust collector not meeting the standard or equipment failure can be avoided. The pulse bag dust collector can separate the micro-particles (1-5μm) coke powder in the circulating gas, extend the service life of the circulating pipeline and the circulating fan, and ensure a reasonable service life, so that the dry coke quenching system can operate safely and stably. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0012] Figure 1 A schematic diagram of the structure of a coke dry quenching device that introduces a pulse bag dust collector as a backup secondary dust collector in an embodiment of the utility model;
[0013] In the figure: 1- dry quenching furnace; 2- primary dust collector; 3- cyclone dust collector; 4- pulse bag dust collector; 5- circulating fan; 6- first control valve; 7- second control valve; 8- boiler. DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0015] The utility model aims to provide a dry quenching coke device which introduces a pulse bag dust collector as a spare secondary dust collector to solve the problems existing in the above-mentioned prior art, and to add a pulse bag dust collector to reduce the working pressure of the cyclone dust collector, ensure the dust removal effect and improve work efficiency.
[0016] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0017] like Figure 1 As shown, the utility model provides a dry quenching device that introduces a pulse bag dust collector as a backup secondary dust collector. The same as the prior art is that it includes a dry quenching furnace 1 and a circulation pipeline. The air inlet end of the circulation pipeline is connected to the hot gas outlet of the dry quenching furnace 1, and the air outlet end of the circulation pipeline is connected to the cold air inlet of the dry quenching furnace 1. The high-temperature inert gas discharged from the dry quenching furnace 1 is discharged from the hot gas outlet into the circulation pipeline, and after being cooled by the circulation pipeline, it enters the dry quenching furnace 1 again from the cold air inlet. The circulation pipeline passes through the primary dust collector 2, the boiler 8, the secondary dust removal system and the circulation fan 5 in sequence, wherein the primary dust collector 2 is an existing gravity settling chamber dust collector, and the circulation pipeline passes through the boiler 8 for heat dissipation, which is a prior art, so it will not be described in detail here. The innovation lies in that the secondary dust removal system includes a first dust removal pipeline and a second dust removal pipeline connected in parallel, the first dust removal pipeline is provided with a first control valve 6 and a cyclone dust collector 3, wherein the cyclone dust collector 3 is preferably a multi-tube cyclone dust collector, and the second dust removal pipeline is provided with a second control valve 7 and a pulse bag dust collector 4. When the first control valve 6 is opened and the second control valve 7 is closed, the first dust removal pipeline is opened and the cyclone dust collector 3 performs dust removal; when the second control valve 7 is opened and the first control valve 6 is closed, the second dust removal pipeline is opened and the pulse bag dust collector 4 performs dust removal. The staff can adjust the switches of the first control valve 6 and the second control valve 7 according to actual conditions.
[0018] In actual use, the circulating fan 5 blows low-temperature inert gas into the dry quenching furnace 1, and the high-temperature inert gas is discharged from the dry quenching furnace 1. The discharged gas passes through the primary dust collector 2 using the gravity sedimentation dust removal principle to separate and remove large particles of coke powder, and then enters the boiler 8. After heat exchange in the boiler 8, the temperature drops from 800-1000°C to 160-180°C. After secondary dust removal by the cyclone dust collector 3, the fine particles of coke powder in the circulating gas are further separated, and the dust content is reduced to 1g / m 3 When the dust concentration of the circulating gas is high, the secondary dust removal effect is not up to standard or the cyclone dust collector 3 fails, the circulating gas from the boiler 8 is introduced into the pulse bag dust collector 4. After filtering and separating the small particles of coke powder, the dust content at the outlet can reach 50mg / m 3 Next, the circulating fan 5 is entered. Bag dust removal technology has the advantages of high filtration efficiency and low emission concentration. Introducing the pulse bag dust collector 4 as a backup secondary dust collector can avoid the problem of wear of the circulating fan 5 and the circulating pipeline due to the dust removal effect of the cyclone dust collector 3 not meeting the standard or equipment failure.
[0019] In this embodiment, the first control valve 6 and the second control valve 7 are both electrically controlled valves, a dust concentration sensor is provided at the air inlet of the circulating fan 5, and the electrically controlled valves (including the first control valve 6 and the second control valve 7) and the dust concentration sensor are electrically connected to the system controller, and the controller includes but is not limited to a PLC controller or a single-chip microcomputer controller.
[0020] In actual operation, a dust concentration sensor can be used to monitor the dust concentration entering the circulating fan 5 in real time. If the dust concentration sensor detects that the concentration is too high, the controller is used to adjust the switches of the first control valve 6 and the second control valve 7. If the cyclone dust collector 3 is working, it needs to be replaced by the pulse bag dust collector 4; conversely, if the pulse bag dust collector 4 is working, the on-site operator can replace the cyclone dust collector 3 according to the actual operating conditions.
[0021] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A coke dry quenching device that introduces a pulse bag dust collector as a backup secondary dust collector, comprising a dry quenching furnace and a circulation pipeline, wherein the air inlet end of the circulation pipeline is connected to the hot air outlet of the dry quenching furnace, and the air outlet end of the circulation pipeline is connected to the cold air inlet of the dry quenching furnace, and the circulation pipeline passes through a primary dust collector, a boiler, a secondary dust removal system and a circulation fan in sequence, and is characterized in that: The secondary dust removal system includes a first dust removal pipeline and a second dust removal pipeline connected in parallel with each other, wherein the first dust removal pipeline is provided with a first control valve and a cyclone dust collector, and the second dust removal pipeline is provided with a second control valve and a pulse bag dust collector.
2. The dry quenching device of coke with pulse bag dust collector as backup secondary dust collector according to claim 1 is characterized in that: The first control valve and the second control valve are both electrically controlled valves, and a dust concentration sensor is provided at the air inlet of the circulation fan.