CN112457892A - Coal gas desulfurization system and process method combining fixed bed and moving bed - Google Patents
Coal gas desulfurization system and process method combining fixed bed and moving bed Download PDFInfo
- Publication number
- CN112457892A CN112457892A CN202011372375.2A CN202011372375A CN112457892A CN 112457892 A CN112457892 A CN 112457892A CN 202011372375 A CN202011372375 A CN 202011372375A CN 112457892 A CN112457892 A CN 112457892A
- Authority
- CN
- China
- Prior art keywords
- activated carbon
- pipe
- purification tower
- coal gas
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- C10K1/32—Purifying combustible gases containing carbon monoxide with selectively adsorptive solids, e.g. active carbon
-
- 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
- C10K1/20—Purifying combustible gases containing carbon monoxide by treating with solids; Regenerating spent purifying masses
- C10K1/22—Apparatus, e.g. dry box purifiers
-
- 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
- C10K1/20—Purifying combustible gases containing carbon monoxide by treating with solids; Regenerating spent purifying masses
- C10K1/26—Regeneration of the purifying material contains also apparatus for the regeneration of the purifying material
Abstract
The invention discloses a coal gas desulfurization system and a process method combining a fixed bed and a moving bed, wherein the coal gas desulfurization process method combining the fixed bed and the moving bed is characterized in that a purification tower filled with active carbon is used for desulfurizing coal gas, a regeneration tower is used for regenerating saturated active carbon, and when the purification tower works, at least one purification tower is used for carrying out adsorption desulfurization and at the same time at least one purification tower is used for purging replacement or active carbon replacement; the working process of the purification tower is as follows: (1) desulfurizing the coal gas by using active carbon; (2) stopping introducing the coal gas after the activated carbon is saturated in adsorption, and performing purging replacement by using inert gas; (3) after the replacement is qualified, sending the activated carbon with saturated adsorption to a regeneration tower for regeneration, and supplementing fresh activated carbon or regenerated activated carbon into a purification tower to finish the replacement of the activated carbon; (4) and after the active carbon replacement is finished, purging and replacing the purification tower by using inert gas again, and introducing coal gas again to desulfurize by using the active carbon.
Description
Technical Field
The invention relates to a coal gas desulfurization system and a process method combining a fixed bed and a moving bed, in particular to a system and a process method for removing organic sulfur and inorganic sulfur in coal gas, belonging to the technical field of air pollution prevention and control.
Background
Coke oven gas and blast furnace gas are important gaseous fuels of iron and steel plants, a plurality of tubular furnaces, heating furnaces, gas power generation boilers and the like use the coke oven gas and the blast furnace gas as fuels, and the coke oven gas and the blast furnace gas are widely applied to a plurality of working procedures of the iron and steel plants, and are one of important reasons for atmospheric surface source pollution of the current iron and steel plants due to small discharge capacity, poor economical efficiency and poor effect of the conventional tail end treatment technology.
The current requirements for fine desulfurization of coal gas are as follows: 'Source control is strengthened, and fine desulfurization is carried out on blast furnace gas and coke oven gas'. H in blast furnace gas and coke oven gas2The inorganic sulfur such as S and the like can be well removed by processes such as alkali liquor absorption and the like, and H in the purified coal gas2The concentration of S can reach 10 mg/Nm3However, the carbonyl sulfide, carbon disulfide, mercaptan and other organic sulfur components are difficult to remove by the traditional gas desulfurization process due to the physical characteristics, and the detection data show that the organic sulfur content of the coke oven gas still reaches 100 mg/Nm after the coke oven gas is subjected to the alkali liquor absorption desulfurization process3On the left and right, depending on the coal quality, the organic sulfur content may even be higher, SO in the exhaust gas produced by downstream users after burning coal gas2The content is high, in addition, after the gas is combusted, the volume of the generated waste gas is much larger than that of the gas (the volume of the waste gas after the combustion of the blast furnace gas is about 1.6 times of the original volume, the volume of the burnt coke oven gas is about 5.8 times of the original volume, the air surplus coefficient is calculated by 1.2), the investment for end treatment is large, and the technical economy is poorIn addition, the small gas combustion furnace has dispersed space, so that the small gas quantity is discharged irregularly, which further aggravates the environmental pollution.
The coal gas source treatment technology becomes a development direction for treating unorganized waste gas emission in the steel industry, the active carbon has a good removal effect on organic sulfur and inorganic sulfur in coal gas due to special physical properties, the coal gas is toxic, inflammable and explosive gas in the current application, the requirement on the air tightness of a coal gas desulfurization device is high in order to ensure safety, the current active carbon coal gas desulfurization technology mostly adopts a fixed bed form, the active carbon is required to be replaced or regenerated in time after being adsorbed and saturated, the prior art generally adopts two forms, one is to transport the active carbon in the fixed bed out and transport the active carbon to a regeneration device for regeneration, and then supplement new active carbon or regenerated active carbon, the form is intermittent operation, the continuity of system operation is influenced, and the automation degree is not high; the other form is that the fixed bed adsorption device is also a regeneration device, and the temperature required by the regeneration of the active carbon is higher, the design temperature of the fixed bed device is high, and the one-time investment of the device is large. In addition, after the mode is operated for a plurality of cycles, dust accumulation and caking phenomena can occur in the device, the operation resistance is large, the caking activated carbon influences the uniformity of airflow distribution, thereby reducing the purification and regeneration effects, and the activated carbon still needs to be emptied regularly for replacement. In the replacement and regeneration process of the activated carbon material, the working procedures of coal gas cutting, inert gas purging, replacement or regeneration and the like need to be finished, the operation control process is complicated, and the system operation efficiency is further reduced.
Disclosure of Invention
In order to solve the technical problems of discontinuous operation and low automation degree of an activated carbon gas desulfurization system in the prior art, the invention provides a gas desulfurization system and a process method combining a fixed bed and a moving bed, which ensure the operation stability of the gas desulfurization system, improve the automation degree of the gas desulfurization system and simultaneously avoid the phenomena of dust accumulation and caking in the gas desulfurization of the fixed bed.
The coal gas desulfurization system combining the fixed bed and the moving bed adopts the following technical scheme: a coal gas desulfurization system combining a fixed bed and a moving bed comprises a purification tower and a regeneration tower, wherein the purification tower is connected with a coal gas inlet pipeline and a purified exhaust pipeline, the number of the purification towers is at least two, the gas inlet and the gas outlet of each purification tower are respectively connected with a gas inlet branch pipe and a gas outlet branch pipe, each gas inlet branch pipe and each gas outlet branch pipe are respectively connected with the coal gas inlet pipeline and the purified exhaust pipeline, the top and the bottom of the regeneration tower are respectively connected with a saturated activated carbon inlet pipe and a regenerated activated carbon outlet pipe, the bottom of each purification tower is respectively provided with a material outlet pipe connected with the saturated activated carbon inlet pipe, the top of each purification tower is respectively provided with a material inlet pipe connected with the regenerated activated carbon outlet pipe, the purification tower is connected with a purging pipeline, the purging pipeline is provided with a purging valve, the purification tower is also provided with a purging and diffusing port, at least one purification tower is used for adsorbing desulfurization, and simultaneously at least one purification tower is used for sweeping replacement or active carbon replacement, and the gas inlet branch pipe and the exhaust branch pipe that are used for connecting on the purification tower of absorption are opened, and inlet pipe and row material pipe are closed, and the inlet pipe and the exhaust branch pipe that are connected on the purification tower that is used for sweeping the replacement are closed, and inlet pipe and row material pipe are opened.
The inlet pipe, arrange and all be connected with the pipeline that sweeps on material pipe, row's material pipe, inlet branch and the exhaust branch, sweep the position department that the pipeline is close to the purifying column that the pipeline is located.
All be equipped with automatic cutout valve on inlet pipe, row's material pipe, inlet branch and the exhaust branch, sweep the position that the pipe connection is located between automatic cutout valve and the purifying column on the pipeline at place.
The blowing and diffusing port is arranged at the top of the purification tower.
The bottom of regeneration tower is equipped with screening equipment, is equipped with the active carbon sieve in the screening equipment, regeneration active carbon discharging pipe is connected on the active carbon export of screening equipment.
The coal gas desulfurization process method combining the fixed bed and the moving bed adopts the following technical scheme: a fixed bed and moving bed combined coal gas desulfurization process method, it utilizes the purifying column equipped with activated carbon to carry on the desulfurization to the coal gas, utilize the regeneration tower to regenerate the saturated activated carbon, use the material conveying equipment to connect purifying column and regeneration tower at first, specifically set up saturated activated carbon feed pipe and regenerated activated carbon discharging pipe separately at the top and bottom of the regeneration tower, set up the discharge pipe connected with saturated activated carbon feed pipe separately at the bottom of each purifying column; when the purification towers work, at least one purification tower is used for purging and replacing or replacing activated carbon while adsorbing and desulfurizing; the working process of the purification tower is as follows: (1) adsorption desulfurization: introducing coal gas into the purification tower, and desulfurizing the coal gas by utilizing the adsorbability of the activated carbon to purify the coal gas; (2) purging and replacing: stopping introducing the coal gas after the activated carbon is saturated in adsorption, and performing purging replacement by using inert gas; (3) activated carbon replacement: after the replacement is qualified, the activated carbon with saturated adsorption is sent to a regeneration tower through a discharge pipe for regeneration, and fresh activated carbon or regenerated activated carbon is supplemented into the purification tower through a feed pipe to complete the replacement of the activated carbon; (4) purging and replacing: and after the replacement of the activated carbon is finished, blowing and replacing the purification tower by using the inert gas again, introducing the unpurified coal gas again after the replacement is qualified, and desulfurizing the coal gas by using the adsorbability of the activated carbon.
Each column was fed and discharged intermittently.
The regeneration tower works continuously, and the regeneration process is continuous.
And (4) screening the regenerated activated carbon by using screening equipment, discharging the undersize as fuel out of the system, and introducing the oversize into a purification tower for recycling.
The invention has the beneficial effects that: the invention adopts the purification tower as the gas desulfurization equipment, the gas is led out from the designated place before purification, and then is sent to the gas inlet of the purification tower through the gas inlet pipeline and the gas inlet branch pipe by utilizing the self pressure or pressurization of the gas, the gas removes organic sulfur components in the purification tower by utilizing the adsorption performance of activated carbon, the purified gas is converged into the purified gas outlet pipeline through the gas outlet of the purification tower and the gas outlet branch pipe, and is sent to each gas point for gas combustion, thus realizing the source control.
The purification tower can be divided into three working states of desulfurization adsorption, gas purging and active carbon replacement. After the gas is introduced into the purification tower in the adsorption state, organic sulfur and inorganic sulfur in the gas are removed by utilizing the adsorption performance of the activated carbon, and the purification of the gas is completed. And after the activated carbon is saturated in adsorption, stopping introducing the coal gas, purging and replacing by using inert gas, after the replacement is qualified, conveying the activated carbon saturated in adsorption to a regeneration tower through material conveying equipment for regeneration, supplementing fresh activated carbon or regenerated activated carbon into the purification tower through the material conveying equipment to finish the replacement of the activated carbon, and recovering the adsorption capacity of the activated carbon in the purification tower. And after the replacement of the activated carbon is finished, purging and replacing the purification tower by using the inert gas again, introducing the unpurified coal gas again after the replacement is qualified, and removing organic sulfur and inorganic sulfur in the coal gas by using the adsorption performance of the activated carbon to finish the purification of the coal gas. The operation of the purification tower is carried out according to the cycle of the processes of desulfurization adsorption, gas purging, activated carbon replacement, gas purging and desulfurization adsorption.
The invention makes the adsorption process and the regeneration process respectively carried out in the purification tower and the regeneration tower, the adsorption and the regeneration are continuously operated, the advantages of the fixed bed and the moving bed are combined, the operation stability of the coal gas desulfurization system is ensured, and the automation degree of the system is improved.
Preferably, the active carbon is added with a screening process in the material conveying process, dust intercepted by the active carbon and crushed active carbon are screened out and discharged out of the system to serve as fuel, and dust enrichment and active carbon caking in the purification tower are avoided.
Drawings
FIG. 1 is a system diagram of a coal gas desulfurization system combining a fixed bed and a moving bed according to an embodiment of the present invention.
In the figure: 1-a purification tower, 2-a regeneration tower, 3-a gas inlet pipeline, 31-an inlet branch pipe, 4-a purified exhaust pipeline, 41-an exhaust branch pipe, 5-a saturated activated carbon inlet pipe, 6-a regenerated activated carbon outlet pipe, 7-an inlet pipe, 8-a discharge pipe, 9-a purging pipeline, 10-a purging valve, 11-a purging dispersion port, 12-a dispersion valve, 13-an automatic cut-off valve and 14-a screening device.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The gas desulfurization system combining a fixed bed and a moving bed according to an embodiment of the present invention is shown in fig. 1, and comprises a purification tower 1 and a regeneration tower 2, wherein the purification tower 1 is connected with a gas inlet pipe 3 and a purified exhaust pipe 4, the purification tower 1 has at least two purification towers 1, the gas inlet and the gas outlet of each purification tower 1 are respectively connected with a gas inlet branch pipe 31 and an exhaust branch pipe 32, each gas inlet branch pipe 31 and each exhaust branch pipe 32 are respectively connected with the gas inlet pipe 3 and the purified exhaust pipe 4, the top and the bottom of the regeneration tower 2 are respectively connected with a saturated activated carbon inlet pipe 5 and a regenerated activated carbon outlet pipe 6, the bottom of each purification tower 1 is respectively provided with a discharge pipe 8 connected with the saturated activated carbon inlet pipe 5, the top of each purification tower 1 is respectively provided with a feed pipe 7 connected with the regenerated activated carbon outlet pipe 6, the purification tower is characterized in that the purification tower 1 is connected with a purging pipeline 9, the purging pipeline 9 is provided with a purging valve 10, the purification tower 1 is further provided with a purging and diffusing port 11, the purging and diffusing port 11 is provided with a diffusing valve 12, and the purging and diffusing port 11 is arranged at the top of the purification tower 1. The bottom of regeneration tower 2 is equipped with screening equipment 14, is equipped with the active carbon sieve in the screening equipment 14, regeneration active carbon discharging pipe 6 is connected on the active carbon export of screening equipment.
All be connected with on inlet pipe 7, row's material pipe 8, the branch pipe 31 of admitting air and the branch pipe 32 and sweep pipeline 9, sweep pipeline 9 and be located the pipeline position department of being close to purification tower 1. The feeding pipe 7, the discharging pipe 8, the air inlet branch pipe 31 and the air outlet branch pipe 32 are all provided with automatic shut-off valves 13, and the purging pipeline 9 is connected to the position between the automatic shut-off valves 13 and the purification tower 1 on the pipeline.
At least one purification tower 1 is used for adsorption, at the same time at least one purification tower 1 is used for purging replacement or activated carbon replacement, an air inlet branch pipe 31 and an air outlet branch pipe 41 connected to the purification tower 1 for adsorption are opened, a feeding pipe 7 and a discharging pipe 8 are closed, an air inlet branch pipe 31 and an air outlet branch pipe 41 connected to the purification tower 1 for purging replacement are closed, and a feeding pipe 7 and a discharging pipe 8 are opened.
In the embodiment, three purification towers are taken as an example for explanation, coal gas is led out from the coal gas inlet pipeline 3 and sent to the purification tower 1 to complete desulfurization, and the purified exhaust pipeline 4 after desulfurization is sent out. The gas inlet pipeline 3 and the purified exhaust pipeline 4 are respectively provided with an automatic cut-off valve 13, a purging valve 11, a bleeding valve 12 and a flame arrester. During normal operation, two of the three purifying towers are filled with coal gas, and one gas is replaced and discharged, and the operations are sequentially alternated. The material that the purifying column discharged is sent to regenerator 2 through saturated active carbon inlet pipe 7 and is regenerated, the active carbon resumes the adsorption activity, after sieving by screening plant 14, undersize the thing and send to the appointed place as the fuel, oversize the thing and send into purifying column 1 through regeneration active carbon discharging pipe, the active carbon recycles, regenerator 2 continuous operation.
The purification tower is a gas desulfurization device, gas before purification is led out from a designated position, and is sent to a gas inlet of the purification tower through a gas inlet pipeline and a gas inlet branch pipe by utilizing the self pressure or pressurization of the gas, organic sulfur and inorganic sulfur components of the gas are removed in the purification tower by utilizing the adsorption performance of activated carbon, and the purified gas is converged into a purified gas exhaust pipeline through a gas outlet of the purification tower through a gas exhaust branch pipe and is sent to each gas point for gas combustion, so that the source control is realized.
The detailed working process of the purification tower is as follows: the purification tower can be divided into three working states of desulfurization adsorption, gas purging and active carbon replacement. After the gas is introduced into the purification tower in the adsorption state, organic sulfur and inorganic sulfur in the gas are removed by utilizing the adsorption performance of the activated carbon, and the purification of the gas is completed. When activated carbon is saturated in adsorption, stopping introducing coal gas, purging and replacing by utilizing inert gas, after replacement is qualified, conveying the activated carbon saturated in adsorption to a regeneration tower through material conveying equipment for regeneration, supplementing fresh activated carbon or regenerated activated carbon into a purification tower through the material conveying equipment, completing the replacement of the activated carbon, recovering the adsorption capacity of the activated carbon in the purification tower, adding a screening process to the activated carbon in the material conveying process, screening out dust intercepted by the activated carbon and crushed activated carbon, and discharging the dust intercepted by the activated carbon and the crushed activated carbon out of the system as fuel, thereby avoiding dust enrichment and activated carbon agglomeration in the purification tower. And after the replacement of the activated carbon is finished, purging and replacing the purification tower by using the inert gas again, introducing the unpurified coal gas again after the replacement is qualified, and removing organic sulfur and inorganic sulfur in the coal gas by using the adsorption performance of the activated carbon to finish the purification of the coal gas. The operation of the purification tower is carried out according to the cycle of the processes of adsorption desulfurization, gas purging, activated carbon replacement, gas purging and adsorption desulfurization.
In the normal operation of the system, the material conveying equipment is in a continuous operation state, the regeneration towers are in a continuous operation state, one or more purification towers are always in a material replacement state according to a certain sequence, and the other purification towers are in an adsorption desulfurization state.
The invention discloses a coal gas desulfurization process method combining a fixed bed and a moving bed, which is implemented by utilizing a purification tower filled with activated carbon to desulfurize coal gas and utilizing a regeneration tower to regenerate saturated activated carbon, wherein the purification tower and the regeneration tower are connected by adopting material conveying equipment, specifically, a saturated activated carbon feeding pipe and a regenerated activated carbon discharging pipe are respectively arranged at the top and the bottom of the regeneration tower, and a discharging pipe connected with the saturated activated carbon feeding pipe is respectively arranged at the bottom of each purification tower;
when the purification towers work, at least one purification tower is used for purging and replacing or replacing activated carbon while adsorbing and desulfurizing; the working process of the purification tower is as follows: (1) adsorption desulfurization: introducing coal gas into the purification tower, and desulfurizing the coal gas by utilizing the adsorbability of the activated carbon to purify the coal gas; (2) purging and replacing: stopping introducing the coal gas after the activated carbon is saturated in adsorption, and performing purging replacement by using inert gas; (3) activated carbon replacement: after the replacement is qualified, the activated carbon with saturated adsorption is sent to a regeneration tower through a discharge pipe for regeneration, and fresh activated carbon or regenerated activated carbon is supplemented into the purification tower through a feed pipe to complete the replacement of the activated carbon; (4) purging and replacing: and after the replacement of the activated carbon is finished, blowing and replacing the purification tower by using the inert gas again, introducing the unpurified coal gas again after the replacement is qualified, and desulfurizing the coal gas by using the adsorbability of the activated carbon.
Each purifying tower is fed and discharged discontinuously, the regeneration tower works continuously, and the regeneration process is continuous; and (4) screening the regenerated activated carbon by using screening equipment, discharging the undersize as fuel out of the system, and introducing the oversize into a purification tower for recycling.
Although the embodiments of the present invention have been described above in detail, the present invention is not limited to the above-described embodiments. The scope of the invention defined by the appended claims encompasses all equivalent substitutions and modifications.
Claims (9)
1. The utility model provides a coal gas desulfurization system that fixed bed and moving bed combined together, includes purifying column and regenerator column, is connected with coal gas inlet line and purifies back exhaust pipe way on the purifying column, its characterized in that: the purification tower is provided with at least two purification towers, an air inlet and an air outlet of each purification tower are respectively connected with an air inlet branch pipe and an air outlet branch pipe, each air inlet branch pipe and each air outlet branch pipe are respectively connected with a coal gas inlet pipeline and a purified exhaust pipeline, the top and the bottom of each purification tower are respectively connected with a saturated activated carbon inlet pipe and a regenerated activated carbon discharge pipe, the bottom of each purification tower is respectively provided with a material discharge pipe connected with the saturated activated carbon inlet pipe, the top of each purification tower is respectively provided with a material inlet pipe connected with the regenerated activated carbon discharge pipe, the purification tower is connected with a purging pipeline, the purging pipeline is provided with a purging valve, the purification tower is also provided with a purging and diffusing port, the purging and diffusing port is provided with a diffusing valve, at least one purification tower is used for adsorption, at least one purification tower is used for purging and replacing or activated carbon, the air inlet branch pipe and, The material inlet pipe and the material outlet pipe are closed, the air inlet branch pipe and the air outlet branch pipe are connected on the purification tower for purging and replacing, and the material inlet pipe and the material outlet pipe are opened.
2. The fixed bed and moving bed combined gas desulfurization system according to claim 1, characterized in that: the inlet pipe, arrange and all be connected with the pipeline that sweeps on material pipe, row's material pipe, inlet branch and the exhaust branch, sweep the position department that the pipeline is close to the purifying column that the pipeline is located.
3. The fixed bed and moving bed combined gas desulfurization system according to claim 2, characterized in that: all be equipped with automatic cutout valve on inlet pipe, row's material pipe, inlet branch and the exhaust branch, sweep the position that the pipe connection is located between automatic cutout valve and the purifying column on the pipeline at place.
4. The fixed bed and moving bed combined gas desulfurization system according to claim 1, characterized in that: the blowing and diffusing port is arranged at the top of the purification tower.
5. The fixed bed and moving bed combined gas desulfurization system according to claim 1, characterized in that: the bottom of regeneration tower is equipped with screening equipment, is equipped with the active carbon sieve in the screening equipment, regeneration active carbon discharging pipe is connected on the active carbon export of screening equipment.
6. A coal gas desulfurization process method combining a fixed bed and a moving bed is characterized in that a purification tower filled with activated carbon is used for desulfurizing coal gas, and a regeneration tower is used for regenerating saturated activated carbon, and the process method is characterized in that: firstly, connecting a purification tower with a regeneration tower by adopting material conveying equipment, specifically, respectively arranging a saturated activated carbon feeding pipe and a regenerated activated carbon discharging pipe at the top and the bottom of the regeneration tower, and respectively arranging a discharging pipe connected with the saturated activated carbon feeding pipe at the bottom of each purification tower;
when the purification towers work, at least one purification tower is used for purging and replacing or replacing activated carbon while adsorbing and desulfurizing; the working process of the purification tower is as follows: (1) adsorption desulfurization: introducing coal gas into the purification tower, and desulfurizing the coal gas by utilizing the adsorbability of the activated carbon to purify the coal gas; (2) purging and replacing: stopping introducing the coal gas after the activated carbon is saturated in adsorption, and performing purging replacement by using inert gas; (3) activated carbon replacement: after the replacement is qualified, the activated carbon with saturated adsorption is sent to a regeneration tower through a discharge pipe for regeneration, and fresh activated carbon or regenerated activated carbon is supplemented into the purification tower through a feed pipe to complete the replacement of the activated carbon; (4) purging and replacing: and after the replacement of the activated carbon is finished, blowing and replacing the purification tower by using the inert gas again, introducing the unpurified coal gas again after the replacement is qualified, and desulfurizing the coal gas by using the adsorbability of the activated carbon.
7. The fixed bed and moving bed combined gas desulfurization process according to claim 6, characterized in that: each column was fed and discharged intermittently.
8. The fixed bed and moving bed combined gas desulfurization process according to claim 6, characterized in that: the regeneration tower works continuously, and the regeneration process is continuous.
9. The fixed bed and moving bed combined gas desulfurization process according to claim 6, characterized in that: and (4) screening the regenerated activated carbon by using screening equipment, discharging the undersize as fuel out of the system, and introducing the oversize into a purification tower for recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372375.2A CN112457892A (en) | 2020-11-30 | 2020-11-30 | Coal gas desulfurization system and process method combining fixed bed and moving bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372375.2A CN112457892A (en) | 2020-11-30 | 2020-11-30 | Coal gas desulfurization system and process method combining fixed bed and moving bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112457892A true CN112457892A (en) | 2021-03-09 |
Family
ID=74805985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011372375.2A Pending CN112457892A (en) | 2020-11-30 | 2020-11-30 | Coal gas desulfurization system and process method combining fixed bed and moving bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112457892A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5571612A (en) * | 1978-11-24 | 1980-05-29 | Sumitomo Heavy Ind Ltd | Activated carbon regenerating and sulfur recovering method |
| CN103980955A (en) * | 2014-05-15 | 2014-08-13 | 太原钢铁(集团)有限公司 | Gas desulfurization and sulfur regeneration process and device |
| CN105920876A (en) * | 2016-06-27 | 2016-09-07 | 河南中托力合化学有限公司 | Organic solvent refining device |
| CN207667379U (en) * | 2017-11-21 | 2018-07-31 | 国电科学技术研究院 | It is suitble to the activated coke system of garbage-incineration smoke purifying |
| CN111286368A (en) * | 2020-03-24 | 2020-06-16 | 安徽威达环保科技股份有限公司 | Method and device for adsorption desulfurization of blast furnace gas |
| CN210905666U (en) * | 2019-06-26 | 2020-07-03 | 中冶长天国际工程有限责任公司 | Denitration system for regenerating SCR catalyst on line by utilizing hot gas of hot blast stove of activated carbon desorption tower |
| CN214004539U (en) * | 2020-11-30 | 2021-08-20 | 南京泽众环保科技有限公司 | Coal gas desulfurization system combining fixed bed and moving bed |
-
2020
- 2020-11-30 CN CN202011372375.2A patent/CN112457892A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5571612A (en) * | 1978-11-24 | 1980-05-29 | Sumitomo Heavy Ind Ltd | Activated carbon regenerating and sulfur recovering method |
| CN103980955A (en) * | 2014-05-15 | 2014-08-13 | 太原钢铁(集团)有限公司 | Gas desulfurization and sulfur regeneration process and device |
| CN105920876A (en) * | 2016-06-27 | 2016-09-07 | 河南中托力合化学有限公司 | Organic solvent refining device |
| CN207667379U (en) * | 2017-11-21 | 2018-07-31 | 国电科学技术研究院 | It is suitble to the activated coke system of garbage-incineration smoke purifying |
| CN210905666U (en) * | 2019-06-26 | 2020-07-03 | 中冶长天国际工程有限责任公司 | Denitration system for regenerating SCR catalyst on line by utilizing hot gas of hot blast stove of activated carbon desorption tower |
| CN111286368A (en) * | 2020-03-24 | 2020-06-16 | 安徽威达环保科技股份有限公司 | Method and device for adsorption desulfurization of blast furnace gas |
| CN214004539U (en) * | 2020-11-30 | 2021-08-20 | 南京泽众环保科技有限公司 | Coal gas desulfurization system combining fixed bed and moving bed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105233673B (en) | A kind of carbon base catalyst system for desulfuration and denitration and method | |
| WO2022037204A1 (en) | Blast furnace gas desulfurization apparatus and method | |
| CN107961770B (en) | Regeneration system and regeneration method of adsorbent in coke oven flue gas purification | |
| CN113122340B (en) | Blast furnace gas purification method | |
| CN109999574B (en) | Low-sulfur flue gas fluidized bed activated carbon adsorption denitration method | |
| CN104353356A (en) | Pelletizing flue gas cleaning and adsorbing tower of travelling grate machine | |
| CN111286368A (en) | Method and device for adsorption desulfurization of blast furnace gas | |
| CN110252068A (en) | The desulfurizing and purifying method of blast furnace gas | |
| CN214004539U (en) | Coal gas desulfurization system combining fixed bed and moving bed | |
| CN113019094A (en) | Device and method for efficiently removing mercury by using sulfur-containing waste gas | |
| CN103492048B (en) | For the low NO of drier xthe system and method for discharge regeneration | |
| CN103962115A (en) | Desulphurization activated carbon regeneration process combined with Claus device | |
| CN108970328B (en) | Device and process for treating high-sulfur waste gas in chemical industry and recovering sulfur | |
| CN108704474A (en) | Coke oven flue gas and Claus tail gases combined treatment process | |
| CN103316563B (en) | Blue charcoal tail gas desulfurization purifier and using method thereof | |
| CN111334340A (en) | Method for purifying blast furnace gas | |
| CN112457892A (en) | Coal gas desulfurization system and process method combining fixed bed and moving bed | |
| CN112322363A (en) | Nano composite zeolite adsorption blast furnace gas fine desulfurization process and device | |
| CN110252069A (en) | The sulfur method of blast furnace gas | |
| CN208082173U (en) | The processing system of activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid | |
| CN204261560U (en) | A kind of belt type roasting machine pelletizing gas cleaning adsorption tower | |
| CN110252070A (en) | The purification method of blast furnace gas | |
| CN212451324U (en) | Dry purification device for total sulfur removal of blast furnace gas | |
| CN216337472U (en) | Moving bed coal gas desulfurization system | |
| CN106563350A (en) | Horizontal modular flue gas desulfurization and denitrification adsorption regeneration integrated system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210309 |
|
| RJ01 | Rejection of invention patent application after publication |