CN214552199U

CN214552199U - Ferrosilicon ore hot furnace tail gas treatment system

Info

Publication number: CN214552199U
Application number: CN202023162288.2U
Authority: CN
Inventors: 黄浩; 王凯; 杜文军; 孙立忠; 任海龙; 朱兴红; 马伏刚; 吴俊�; 李宗杰; 马海军; 王傲天
Original assignee: Xingxia Tzhg Waste Heat Generation Technology Co ltd; Zhongwei Shengjin Beituo Building Materials Co ltd
Current assignee: Xingxia Tzhg Waste Heat Generation Technology Co ltd; Zhongwei Shengjin Beituo Building Materials Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-11-02
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a hot stove tail gas processing system of ferrosilicon ore, including hot stove, flue gas collection device, condenser, gravity dust collector, sack cleaner, wet dust collector, electrostatic precipitator, gas holder and dust collection device of ferrosilicon ore, remove dust through the condenser cooling, reach the emission that reduces dust and harmful gas through multistage dust removals such as gravity dust collector, sack cleaner, wet dust collector, electrostatic precipitator.

Description

Ferrosilicon ore hot furnace tail gas treatment system

Technical Field

The utility model relates to a hot stove equipment technical field in metallurgical ore deposit, in particular to hot stove tail gas processing system in ferrosilicon ore deposit.

Background

The ferrosilicon ore smelting furnace can generate a large amount of dust-containing flue gas in the actual production process, the temperature of the high-temperature flue gas can reach 400 ℃, and most of the flue gas is high-temperature coal gas generated in the smelting stage of the ore smelting furnace; and the smoke with high tar content generated in the furnace baking stage of the submerged arc furnace and the smoke emitted outside the submerged arc furnace along with the discharging process of the smelting product in the discharging stage of the smelting product are also at least partially contained. Because this part flue gas temperature is higher and contain more smoke and dust so can not directly discharge, often need lower the temperature earlier and remove dust, discharge after carrying out recycle with the waste heat, still contain more dust particulate matter and accompany the waste gas of high temperature in the above-mentioned flue gas, if directly discharge can lead to too much harmful dust to get into the atmosphere, cause the environment serious pollution.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a ferrosilicon hot furnace tail gas treatment system with functions of temperature reduction, dust removal, multi-stage dust removal and dust emission reduction.

A tail gas treatment system of a ferrosilicon hot furnace comprises a ferrosilicon hot furnace, a flue gas collecting device, a condenser, a gravity dust collector, a bag-type dust collector, a wet dust collector, an electrostatic dust collector, a gas storage cabinet and a dust collecting device, wherein the flue gas collecting device is arranged on a flue gas discharge port of the ferrosilicon hot furnace, the condenser, the gravity dust collector, the bag-type dust collector, the wet dust collector, the electrostatic dust collector and the gas storage cabinet are sequentially connected through a pipeline, the condenser is provided with a first dust discharge port, the gravity dust collector is provided with a second dust discharge port, the bag-type dust collector is provided with a third dust discharge port, the wet dust collector is provided with a fourth dust discharge port, the electrostatic dust collector is provided with a fifth dust discharge port, the first dust discharge port, the second dust discharge port, the third dust discharge port, the fourth dust discharge port and the fifth dust discharge port are all arranged on the same straight line, and the dust collecting device is arranged on the first dust discharge port, A second dust discharge port, a third dust discharge port, a fourth dust discharge port and a fifth dust discharge port.

Preferably, the air inlet of the condenser is provided with a temperature detector, and the temperature detector detects the temperature of the passing flue gas and then adjusts the cooling power of the condenser to control the temperature of the flue gas discharged from the condenser within a certain range.

Preferably, the dust collecting device comprises an auger conveying assembly and a collecting box, the auger conveying assembly is arranged below the first dust outlet, the second dust outlet, the third dust outlet, the fourth dust outlet and the fifth dust outlet, and the collecting box is arranged below one end of the auger conveying assembly.

Preferably, the hot stove tail gas processing system of ferrosilicon still includes exhaust gas reaction unit, and exhaust gas reaction unit connects on the blast pipe of gas holder.

In the ferrosilicon ore heating furnace tail gas treatment system, the flue gas collecting device conveys high-temperature flue gas discharged by the ferrosilicon ore heating furnace to the condenser for cooling, and part of dust is removed; entering a gravity dust collector to remove a part of dust; entering a bag-type dust collector, and removing most of the residual dust; the waste gas discharged from the bag-type dust collector enters a wet dust collector to remove all particle dust and harmful impurities such as hydrogen sulfide, sulfur dioxide and the like contained in the waste gas; the waste gas discharged from the wet dust collector enters a high-efficiency electrostatic dust collector to remove all fine dust particles contained in the waste gas, and finally the high-purity gas meeting the requirements of chemical production raw materials is obtained and collected in a gas storage cabinet.

Drawings

Fig. 1 is a block diagram of the present invention.

Fig. 2 is a block diagram of another embodiment.

In the figure: the tail gas treatment system comprises a ferrosilicon hot furnace tail gas treatment system 100, a ferrosilicon hot furnace 10, a flue gas collection device 20, a condenser 30, a first dust discharge port 31, a temperature detector 32, a gravity dust collector 40, a second dust discharge port 41, a bag-type dust collector 50, a third dust discharge port 51, a wet dust collector 60, a fourth dust discharge port 61, an electrostatic dust collector 70, a fifth dust discharge port 71, a gas storage cabinet 80, a dust collection device 90, a packing auger conveying assembly 91, a collection box 92 and a waste gas reaction device 101.

Detailed Description

The following combines the utility model discloses an attached drawing does further elaboration to the technical scheme and the technological effect of utility model embodiment.

Referring to fig. 1, a ferrosilicon hot furnace tail gas treatment system 100 comprises a ferrosilicon hot furnace 10, a flue gas collection device 20, a condenser 30, a gravity dust collector 40, a bag-type dust collector 50, a wet dust collector 60, an electrostatic dust collector 70, a gas holder 80 and a dust collection device 90, wherein the flue gas collection device 20 is installed on a flue gas discharge port of the ferrosilicon hot furnace 10, the condenser 30, the gravity dust collector 40, the bag-type dust collector 50, the wet dust collector 60, the electrostatic dust collector 70 and the gas holder 80 are sequentially connected by a pipeline, the flue gas collection device 20 conveys high-temperature flue gas discharged by the ferrosilicon hot furnace 10 to the condenser 30 for cooling, and removes a part of dust, the service life of each subsequent stage of dust collector is prolonged after the temperature of the flue gas is reduced, and the flue gas enters the gravity dust collector 40 from the condenser 30 to remove a part of dust; the flue gas enters the bag-type dust collector 50 from the gravity dust collector 40, most of the residual dust is removed, the waste gas discharged from the bag-type dust collector 50 enters the wet dust collector 60 to remove all particle dust and harmful impurities such as hydrogen sulfide and sulfur dioxide contained in the waste gas, the waste gas discharged from the wet dust collector 60 enters the high-efficiency electrostatic dust collector 70 to remove all fine dust particles contained in the waste gas, and finally the pure high-purity gas meeting the requirements of chemical production raw materials is obtained and collected in the gas storage cabinet 80.

Referring to fig. 1, the condenser 30 is provided with a first dust discharge port 31, the gravity dust collector 40 is provided with a second dust discharge port 41, the bag-type dust collector 50 is provided with a third dust discharge port 51, the wet dust collector 60 is provided with a fourth dust discharge port 61, the electrostatic dust collector 70 is provided with a fifth dust discharge port 71, the first dust discharge port 31, the second dust discharge port 41, the third dust discharge port 51, the fourth dust discharge port 61 and the fifth dust discharge port 71 are all arranged on the same straight line, and the dust collecting device 90 is arranged below the first dust discharge port 31, the second dust discharge port 41, the third dust discharge port 51, the fourth dust discharge port 61 and the fifth dust discharge port 71. The dust collecting device 90 comprises an auger conveying assembly 91 and a collecting box 92, wherein the auger conveying assembly 91 is arranged below the first dust outlet 31, the second dust outlet 41, the third dust outlet 51, the fourth dust outlet 61 and the fifth dust outlet 71, and the collecting box 92 is arranged below one end of the auger conveying assembly 91. The air inlet of the condenser 30 is provided with a temperature detector 32, the temperature detector 32 detects the temperature of the passing flue gas and then adjusts the power of the condenser 30 to control the temperature of the flue gas discharged from the condenser 30 within a certain range.

In another embodiment, referring to fig. 2, the ferrosilicon hot furnace tail gas treatment system 100 further includes a waste gas reaction device 101, the waste gas reaction device 101 is connected to an exhaust pipe of the gas storage tank 80, and the gas in the gas storage tank 80 is introduced into the waste gas reaction device 101 to produce a plurality of different chemical products, such as dimethyl carbonate, dimethyl ether, methanol, urea, and the like.

Claims

1. A tail gas treatment system of a ferrosilicon ore heating furnace is characterized by comprising a ferrosilicon ore heating furnace, a flue gas collecting device, a condenser, a gravity dust collector, a bag-type dust collector, a wet dust collector, an electrostatic dust collector, a gas storage cabinet and a dust collecting device, wherein the flue gas collecting device is arranged on a flue gas discharge port of the ferrosilicon ore heating furnace, the condenser, the gravity dust collector, the bag-type dust collector, the wet dust collector, the electrostatic dust collector and the gas storage cabinet are sequentially connected through a pipeline, the condenser is provided with a first dust discharge port, the gravity dust collector is provided with a second dust discharge port, the bag-type dust collector is provided with a third dust discharge port, the wet dust collector is provided with a fourth dust discharge port, the electrostatic dust collector is provided with a fifth dust discharge port, and the first dust discharge port, the second dust discharge port, the third dust discharge port, the fourth dust discharge port and the fifth dust discharge port are all arranged on the same straight line, the dust collecting device is disposed below the first dust discharge port, the second dust discharge port, the third dust discharge port, the fourth dust discharge port, and the fifth dust discharge port.

2. The tail gas treatment system of the ferrosilicon hot furnace as claimed in claim 1, wherein the air inlet of the condenser is provided with a temperature detector, and the temperature detector detects the temperature of the passing flue gas and adjusts the cooling power of the condenser to control the temperature of the flue gas discharged from the condenser within a certain range.

3. The tail gas treatment system of the ferrosilicon smelting furnace as claimed in claim 2, wherein the dust collection device includes an auger delivery assembly and a collection box, the auger delivery assembly being installed below the first, second, third, fourth and fifth dust discharge ports, the collection box being installed below one end of the auger delivery assembly.

4. The ferrosilicon hot furnace tail gas treatment system of claim 3, further comprising a waste gas reaction device, the waste gas reaction device being connected to an exhaust pipe of the gas storage tank.