CN112195043A - Blast furnace gas desulfurization method and device - Google Patents
Blast furnace gas desulfurization method and device Download PDFInfo
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- CN112195043A CN112195043A CN202011045419.0A CN202011045419A CN112195043A CN 112195043 A CN112195043 A CN 112195043A CN 202011045419 A CN202011045419 A CN 202011045419A CN 112195043 A CN112195043 A CN 112195043A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
- C10K1/004—Sulfur containing contaminants, e.g. hydrogen sulfide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/024—Dust removal by filtration
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/34—Purifying combustible gases containing carbon monoxide by catalytic conversion of impurities to more readily removable materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
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Abstract
The invention relates to the technical field of blast furnace gas desulfurization and purification treatment, and discloses a blast furnace gas desulfurization method2And S, then, the blast furnace gas passes through a blast furnace gas residual pressure turbine power generation device or a pressure reducing valve, then is subjected to spray cooling desulfurization and demister demisting through a desulfurization cooling tower, and is sent into a gas pipe network after being purified. The invention also discloses a blast furnace gas desulfurization device. The invention relates to a method and a device for desulfurizing blast furnace gasEffectively solves the problem of SO of high-furnace gas users such as blast furnace hot blast furnaces, heating furnaces, heat treatment furnaces and the like caused by high total sulfur content of the blast furnace gas2The problem of standard exceeding and low cost.
Description
Technical Field
The invention relates to the technical field of blast furnace gas desulfurization and purification treatment, in particular to a blast furnace gas desulfurization method and a blast furnace gas desulfurization device.
Background
Blast Furnace Gas (BFG) is an important secondary energy source in iron and steel plants, and is often used as fuel of hot blast stoves, coke ovens and boilers independently after dust removal, and can also be mixed with coke oven gas to form a calorific value of 1100-2000 kcal/Nm3The mixed gas of (3) is used as a fuel for a soaking furnace, a heating furnace, a heat treatment furnace, etc., and is used for ignition of a sintering machine, etc. With the improvement of environmental protection requirements of the steel industry and the requirement of ultralow emission limit value of sulfur dioxide in atmospheric pollutants in a blast furnace hot blast stove, a steel rolling heat treatment furnace and the like in the suggestion of ultralow emission of the steel industry, the emission standard reaching pressure of gas users in steel enterprises is forced to be increased rapidly.
As the blast furnace gas used in the steel enterprises is in a plurality of points, for example, the flue gas of the hot blast furnace in the iron pre-process, the heating furnace in the steel rolling process, the heat treatment furnace and the like has no corresponding desulfurization equipment, and the concentration of sulfur dioxide discharged by the hot blast furnace and the heating furnace is generally 100-200mg/m3The requirement of ultra-low emission index has a large gap. The newly-built flue gas desulfurization equipment such as a hot blast furnace, a heat treatment furnace and the like has the problems of large investment, high operating cost, low practicability, bringing of a large amount of desulfurization byproducts and the like, and the blast furnace gas desulfurization at the source is a more economic choice. Thus, it is possible to provideResearch and development of blast furnace gas purification and desulfurization technology to solve the problem of flue gas SO of subsequent gas users2The problem of exceeding standard is of great significance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a blast furnace gas desulfurization method and a blast furnace gas desulfurization device, which effectively solve the problem of SO of high-furnace gas users such as a blast furnace hot blast furnace, a heating furnace and a heat treatment furnace caused by high total sulfur content of the blast furnace gas2The problem of standard exceeding and low cost.
In order to achieve the aim, the blast furnace gas desulfurization method designed by the invention is characterized in that the blast furnace gas subjected to fine dust removal by a bag-type dust remover is sent into a hydrolysis catalytic tower for hydrolysis catalytic desulfurization, and COS of the blast furnace gas is converted into H under the action of a hydrolysis catalyst in the hydrolysis catalytic tower2And S, then, the blast furnace gas passes through a blast furnace gas residual pressure turbine power generation device or a pressure reducing valve, then is subjected to spray cooling desulfurization and demister demisting through a desulfurization cooling tower, and is sent into a gas pipe network after being purified.
Preferably, the temperature in the hydrolysis catalytic tower is 60-150 ℃, and the space velocity is 1000-2000 h-1。
Preferably, the hydrolysis catalyst in the hydrolysis catalyst tower is gamma-Al2O3Or TiO2Or ZrO2As carrier, alkali metal K2O is an active component.
Preferably, the absorbent used in the desulfurization cooling tower is a NaOH aqueous solution with the pH value of 9-11.
Preferably, the absorbent is recycled without being discharged outside.
A blast furnace gas desulfurization device used in the blast furnace gas desulfurization method comprises a bag-type dust collector connected with a blast furnace gas source, wherein the bag-type dust collector is connected with a plurality of parallel hydrolysis catalysis towers, the outlets of the hydrolysis catalysis towers are connected in parallel and then are connected in series with a blast furnace gas excess pressure turbine power generation device, the outlet of the blast furnace gas excess pressure turbine power generation device is connected with a desulfurization cooling tower, the outlet of the desulfurization cooling tower is connected with a gas pipe network, the blast furnace gas excess pressure turbine power generation device is connected in parallel with a pressure reducing valve, and the desulfurization cooling tower is also connected with an alkali liquor circulation device.
Preferably, the alkali liquor circulating device include with desulfurization cooling tower alkali liquor exit linkage's circulating pump, the circulating pump even has radial flow sedimentation tank, radial flow sedimentation tank pass through the lye pump with desulfurization cooling tower's alkali liquor access connection, be equipped with NaOH solution charge device, pH automatic checkout device and PAC/PAM charge device on the radial flow sedimentation tank, the bottom of radial flow sedimentation tank still even has sludge sintering device.
Preferably, a hydrolysis catalyst supporting layer and a manhole are arranged in the hydrolysis catalyst tower, and the bed pressure drop of the hydrolysis catalyst supporting layer after the hydrolysis catalyst supporting layer is placed with a catalyst is lower than 2500 Pa.
Preferably, an atomizing nozzle and a wire mesh demister are arranged in the desulfurization cooling tower.
Preferably, the inlet and the outlet of the bag-type dust collector are both provided with a first valve, the inlet and the outlet of the hydrolysis catalytic tower are both provided with a first valve, and the inlet and the outlet of the blast furnace gas residual pressure turbine power generation device and the pressure reducing valve are both provided with a second valve.
The invention relates to a method and a device for desulfurizing blast furnace gas, which solves the problem that the blast furnace gas is desulfurized by organic sulfur COS and inorganic sulfur H2S and the like cause high total sulfur to cause SO after gas combustion2The environmental protection requirement can not be met; the carbonyl sulfide (COS) in the blast furnace gas is efficiently converted into inorganic sulfur (H) by hydrolysis by utilizing the characteristics, the residual pressure and the temperature of the blast furnace gas2S), the total sulfide removal rate reaches more than 60 percent; the original gas spray cooling tower is used, and the gas cooling and desulfurization (H) are realized2S) and reduces HCl and Cl in the coal gas2、CO2The acid gas has better effects on reducing the corrosion of chlorine element in the coal gas to a pipe network and improving the heat value of the coal gas; the invention has the advantages of small occupied area, investment saving, low operating cost, strong practicability, no secondary pollution to the environment and the like, and has better environmental protection benefit and economic benefit.
Drawings
FIG. 1 is a schematic structural view of a blast furnace gas desulfurization apparatus according to the present invention;
fig. 2 is a schematic structural diagram of the lye circulating device in fig. 1.
The components in the figures are numbered as follows:
the system comprises a bag-type dust collector 1, a hydrolysis catalytic tower 2, a blast furnace gas excess pressure turbine power generation device 3, a desulfurization cooling tower 4, a gas pipe network 5, a pressure reducing valve 6, an alkali liquor circulating device 7, a circulating pump 8, a radial flow sedimentation tank 9, an alkali liquor pump 10, a NaOH solution dosing device 11, a pH automatic detection device 12, a PAC/PAM dosing device 13, a sludge sintering device 14, a hydrolysis catalyst supporting layer 15, a manhole 16, a first valve 17 and a second valve 18.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
A blast furnace gas desulfurization method is characterized in that blast furnace gas subjected to fine dust removal by a bag-type dust remover 1 is fed into a hydrolysis catalytic tower 2 for hydrolysis catalytic desulfurization, and COS in the blast furnace gas is converted into H under the action of a hydrolysis catalyst in the hydrolysis catalytic tower 22And S, then, the blast furnace gas passes through a blast furnace gas residual pressure turbine power generation device 3 or a pressure reducing valve 6, then is sprayed, cooled, desulfurized and demisted by a demister through a desulfurization and cooling tower 4, and is sent into a gas pipe network 5 after being purified.
Wherein the temperature in the hydrolysis catalytic tower 2 is 60-150 ℃, and the space velocity is 1000-2000 h-1. The hydrolysis catalyst in the hydrolysis catalyst tower 2 is gamma-Al2O3Or TiO2Or ZrO2As carrier, alkali metal K2O is an active component, the absorbent used in the desulfurization cooling tower 4 is a NaOH aqueous solution with the pH value of 9-11, and the absorbent is recycled and is not discharged.
As shown in fig. 1, the blast furnace gas desulfurization device used in the blast furnace gas desulfurization method of the present invention includes a bag-type dust collector 1 connected to a blast furnace gas source, the bag-type dust collector 1 is connected to a plurality of parallel hydrolysis catalytic towers 2, outlets of the hydrolysis catalytic towers 2 are connected in parallel and then connected in series to a blast furnace gas excess pressure turbine power generation device 3, an outlet of the blast furnace gas excess pressure turbine power generation device 3 is connected to a desulfurization cooling tower 4, an outlet of the desulfurization cooling tower 4 is connected to a gas pipe network 5, the blast furnace gas excess pressure turbine power generation device 3 is connected in parallel to a pressure reducing valve 6, and the desulfurization cooling tower 4 is further connected to an alkali liquor.
Wherein, as shown in fig. 2, the alkali liquor circulating device 7 comprises a circulating pump 8 connected with an alkali liquor outlet of the desulfurization cooling tower 4, the circulating pump 8 is connected with a radial flow sedimentation tank 9, the radial flow sedimentation tank 9 is connected with an alkali liquor inlet of the desulfurization cooling tower 4 through an alkali liquor pump 10, the radial flow sedimentation tank 9 is provided with a NaOH solution dosing device 11, a pH automatic detection device 12 and a PAC/PAM dosing device 13, the pH value of water quality is ensured, the concentration of suspended matters is controlled, the pH value is 9-11, the concentration of suspended matters is lower than 20mg/L, the bottom of the radial flow sedimentation tank 9 is also connected with a sludge sintering device 14, and finally sintering treatment is carried out on the cloth bag dedusting ash and the sludge subjected to flocculation precipitation in the radial flow sedimentation tank.
In addition, a hydrolysis catalyst supporting layer 15 and a manhole 16 are arranged in the hydrolysis catalytic tower 2, the pressure drop of a bed layer of the hydrolysis catalyst supporting layer 15 after the hydrolysis catalyst supporting layer is placed with a catalyst is lower than 2500Pa, an atomizing nozzle and a wire mesh demister are arranged in the desulfurization cooling tower 4, alkali liquor fog drop particles sprayed by the atomizing nozzle react with acid gas in coal gas to realize desulfurization and purification of the coal gas, the atomizing nozzle can be arranged in 2-5 layers, the pressure of the atomizer comes from an alkali liquor pump, the wire mesh demister is used for demisting, the fog drops are condensed into large-particle-size fog drop liquid in the wire mesh demister in the rising process of the coal gas to reduce the moisture content in the coal gas, the fog drop liquid returns to the bottom of the tower.
According to the invention, the inlet and the outlet of the bag-type dust collector 1 are both provided with a first valve 17, the inlet and the outlet of the hydrolysis catalytic tower 2 are both provided with a first valve 17, the inlet and the outlet of the blast furnace gas residual pressure turbine power generation device 3 and the pressure reducing valve 6 are both provided with a second valve 18, and the hydrolysis catalytic tower 2 can be arranged in multi-stage series connection or parallel connection through valve control according to the content of carbonyl sulfide (COS) in the blast furnace gas and the requirements of maintenance or filler replacement, so that the requirements of continuous production of the system under the conditions of carbonyl sulfide COS removal and sulfur removal effect are met.
When the invention is used, blast furnace gas (temperature 60-120 ℃, pressure 0.2-0.25MPa) which is subjected to fine dust removal by the bag-type dust remover 1 is sent into the hydrolysis catalytic tower 2 for hydrolysis catalytic desulfurization, wherein part of COS is converted into H2S, the blast furnace gas from the hydrolysis catalytic tower 2 is sprayed and reduced by a blast furnace gas residual pressure turbine generating device 3 or a pressure reducing valve 6 through a desulfurization temperature reduction tower 4Desulfurizing while demisting by demister, and feeding the purified gas into gas pipe network 5. Wherein, blast furnace gas is sent into a hydrolysis catalytic tower 2 for hydrolysis catalytic reaction after being dedusted, which is shown as a reaction formula (1).
COS+H2O→CO2+H2S (1)
Alkali liquor fog drop particles sprayed by the atomizing nozzles in the desulfurization cooling tower 4 react with acid gas in the coal gas, and see the reaction formulas (2) to (4).
H2S+NaOH→Na2S+H2O (2)
CO2+2NaOH→Na2CO3+H2O (3)
HCl+NaOH→NaCl+H2O (4)
The following detailed description is given with reference to specific examples:
example 1
Referring to the working diagrams of the blast furnace gas desulfurization process flow shown in fig. 1 and 2, the process is specifically carried out according to the following steps:
the blast furnace gas after fine dust removal by the bag-type dust remover 1 is fed into a hydrolysis catalytic tower 2 connected in parallel for hydrolysis catalytic desulfurization at the temperature of 60 ℃ and the pressure of 0.2MPa, and the blast furnace gas is subjected to hydrolysis catalytic desulfurization in a hydrolysis catalyst (gamma-Al)2O3As a carrier, an alkali metal K2O is active component catalyst), partial COS is converted into H2And S, reducing the pressure of the blast furnace gas by the blast furnace gas residual pressure turbine generating device 3 or the pressure reducing valve 6, and then sending the blast furnace gas to the desulfurization cooling tower 4. The gas and the alkali liquor are in countercurrent contact in the desulfurization cooling tower 4 to generate absorption reaction, thereby completing the sulfide, HCl and CO in the gas2And the acid gas is partially removed to achieve the aim of purifying the blast furnace gas. And demisting the coal gas from the desulfurization cooling tower 4 by a top demister, and then sending the demisted coal gas into a coal gas pipe network 5.
In this embodiment, the parameters are as follows:
TABLE 1 blast furnace gas sulfide removal effect (1)
Example 2
Referring to the working diagrams of the blast furnace gas desulfurization process flow shown in fig. 1 and 2, the process is specifically carried out according to the following steps:
the blast furnace gas with the temperature of 90 ℃ and the pressure of 0.22MPa after fine dust removal by a bag-type dust remover 1 is sent into a hydrolysis catalytic tower 2 connected in parallel for hydrolysis catalytic desulfurization, and the blast furnace gas is subjected to hydrolysis catalyst (TiO) in a hydrolysis catalyst2As a carrier, an alkali metal K2O is active component catalyst), partial COS is converted into H2And S, reducing the pressure of the blast furnace gas by the blast furnace gas residual pressure turbine generating device 3 or the pressure reducing valve 6, and then sending the blast furnace gas to the desulfurization cooling tower 4. The gas and the alkali liquor are in countercurrent contact in the desulfurization cooling tower 4 to generate absorption reaction, thereby completing the sulfide, HCl and CO in the gas2And the acid gas is partially removed to achieve the aim of purifying the blast furnace gas. And demisting the coal gas from the desulfurization cooling tower 4 by a top demister, and then sending the demisted coal gas into a coal gas pipe network 5.
In this embodiment, the parameters are as follows:
TABLE 2 blast furnace gas sulfide removal effect (2)
Example 3
Referring to the working diagrams of the blast furnace gas desulfurization process flow shown in fig. 1 and 2, the process is specifically carried out according to the following steps:
the blast furnace gas with the temperature of 120 ℃ and the pressure of 0.25MPa after fine dust removal by a bag-type dust remover 1 is sent into a hydrolysis catalytic tower 2 connected in parallel for hydrolysis catalytic desulfurization, and the blast furnace gas is subjected to hydrolysis catalyst (ZrO) in a hydrolysis catalyst2As a carrier, alkali goldBelongs to K2O is active component catalyst), partial COS is converted into H2And S, reducing the pressure of the blast furnace gas by the blast furnace gas residual pressure turbine generating device 3 or the pressure reducing valve 6, and then sending the blast furnace gas to the desulfurization cooling tower 4. The gas and the alkali liquor are in countercurrent contact in the desulfurization cooling tower 4 to generate absorption reaction, thereby completing the sulfide, HCl and CO in the gas2And the acid gas is partially removed to achieve the aim of purifying the blast furnace gas. And demisting the coal gas from the desulfurization cooling tower 4 by a top demister, and then sending the demisted coal gas into a coal gas pipe network 5.
In this embodiment, the parameters are as follows:
TABLE 3 blast furnace gas sulfide removal effectiveness (3)
Compared with the prior art, the invention has the following advantages:
1. solves the problems of the organic sulfur COS and the inorganic sulfur H in the blast furnace gas2S and the like cause high total sulfur to cause SO after gas combustion2The environmental protection requirement can not be met;
2. the carbonyl sulfide (COS) in the blast furnace gas is efficiently converted into inorganic sulfur (H) by hydrolysis by utilizing the characteristics, the residual pressure and the temperature of the blast furnace gas2S), the total sulfide removal rate reaches more than 60 percent;
3. the original gas spray cooling tower is used, and the gas cooling and desulfurization (H) are realized2S) and reduces HCl and Cl in the coal gas2、CO2The acid gas has better effects on reducing the corrosion of chlorine element in the coal gas to a pipe network and improving the heat value of the coal gas;
4. the method has the advantages of small occupied area, low investment, low operating cost, strong practicability, no secondary pollution to the environment and the like, and has better environmental protection benefit and economic benefit.
Claims (10)
1. A blast furnace gas desulfurization method is characterized in that: sending blast furnace gas subjected to fine dust removal by the bag-type dust remover (1) into a hydrolysis catalytic tower (2) for hydrolysis catalysisThe COS in the blast furnace gas is converted into H in the hydrolysis catalytic tower (2) under the action of a hydrolysis catalyst2And S, then, the blast furnace gas passes through a blast furnace gas residual pressure turbine power generation device (3) or a pressure reducing valve (6), is sprayed, cooled, desulfurized and demisted by a demister through a desulfurization and cooling tower (4), and is sent into a gas pipe network (5) after being purified.
2. The blast furnace gas desulfurization method according to claim 1, characterized in that: the temperature in the hydrolysis catalytic tower (2) is 60-150 ℃, and the space velocity is 1000-2000 h-1。
3. The blast furnace gas desulfurization method according to claim 1, characterized in that: the hydrolysis catalyst in the hydrolysis catalytic tower (2) is gamma-Al2O3Or TiO2Or ZrO2As carrier, alkali metal K2O is an active component.
4. The blast furnace gas desulfurization method according to claim 1, characterized in that: and the absorbent used in the desulfurization cooling tower (4) is NaOH aqueous solution with the pH value of 9-11.
5. The blast furnace gas desulfurization method according to claim 4, characterized in that: the absorbent is recycled without discharging.
6. A blast furnace gas desulfurization apparatus used in the blast furnace gas desulfurization method according to claim 1, characterized in that: the device comprises a bag-type dust collector (1) connected with a blast furnace gas source, wherein the bag-type dust collector (1) is connected with a plurality of parallel hydrolysis catalytic towers (2), the outlets of the hydrolysis catalytic towers (2) are connected in parallel and then connected in series with a blast furnace gas residual pressure turbine generating set (3), the outlets of the blast furnace gas residual pressure turbine generating set (3) are connected with a desulfurization cooling tower (4), the outlets of the desulfurization cooling tower (4) are connected with a gas pipe network (5), the blast furnace gas residual pressure turbine generating set (3) is connected in parallel with a pressure reducing valve (6), and the desulfurization cooling tower (4) is also connected with an alkali liquor circulating device (7).
7. The blast furnace gas desulfurization apparatus according to claim 6, characterized in that: alkali lye circulating device (7) include with desulfurization cooling tower (4) alkali lye exit linkage's circulating pump (8), circulating pump (8) even have radial flow sedimentation tank (9), radial flow sedimentation tank (9) through lye pump (10) with the alkali lye access connection of desulfurization cooling tower (4), be equipped with NaOH solution charge device (11), pH automatic checkout device (12) and PAC/PAM charge device (13) on radial flow sedimentation tank (9), the bottom of radial flow sedimentation tank (9) still even has mud sintering device (14).
8. The blast furnace gas desulfurization apparatus according to claim 6, characterized in that: a hydrolysis catalyst supporting layer (15) and a manhole (16) are arranged in the hydrolysis catalytic tower (2), and the bed pressure drop of the hydrolysis catalyst supporting layer (15) after a catalyst is placed in the hydrolysis catalyst supporting layer is lower than 2500 Pa.
9. The blast furnace gas desulfurization apparatus according to claim 6, characterized in that: and an atomizing nozzle and a wire mesh demister are arranged in the desulfurization cooling tower (4).
10. The blast furnace gas desulfurization apparatus according to claim 6, characterized in that: the inlet and the outlet of the bag-type dust collector (1) are respectively provided with a first valve (17), the inlet and the outlet of the hydrolysis catalytic tower (2) are respectively provided with a first valve (17), and the inlet and the outlet of the blast furnace gas residual pressure turbine generating set (3) and the reducing valve (6) are respectively provided with a second valve (18).
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Cited By (7)
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| CN113046138A (en) * | 2021-03-25 | 2021-06-29 | 武汉轻工大学 | High-efficiency desulfurization device and method for blast furnace gas |
| CN113046503A (en) * | 2021-02-05 | 2021-06-29 | 江苏垦乐节能环保科技有限公司 | Method for realizing blast furnace gas desulfurization and purification treatment system |
| CN113186001A (en) * | 2021-04-07 | 2021-07-30 | 新兴铸管股份有限公司 | Blast furnace gas fine desulfurization system |
| CN114134269A (en) * | 2021-11-03 | 2022-03-04 | 北京铝能清新环境技术有限公司 | Blast furnace gas dry-method fine desulfurization system and blast furnace gas dry-method fine desulfurization method |
| CN114225693A (en) * | 2021-12-29 | 2022-03-25 | 浙江德创环保科技股份有限公司 | Blast furnace gas purification treatment device |
| CN114225694A (en) * | 2021-12-29 | 2022-03-25 | 浙江德创环保科技股份有限公司 | Gas fine desulfurization dust removal equipment |
| CN114644947A (en) * | 2022-03-31 | 2022-06-21 | 山东正瀚环保设备有限公司 | Blast furnace gas desulfurization device and method |
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