CN216337472U - Moving bed coal gas desulfurization system - Google Patents
Moving bed coal gas desulfurization system Download PDFInfo
- Publication number
- CN216337472U CN216337472U CN202122819633.3U CN202122819633U CN216337472U CN 216337472 U CN216337472 U CN 216337472U CN 202122819633 U CN202122819633 U CN 202122819633U CN 216337472 U CN216337472 U CN 216337472U
- Authority
- CN
- China
- Prior art keywords
- buffer tank
- tower
- export
- gas
- desulfurization system
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a moving bed gas desulfurization system, which comprises a purification tower and a regeneration tower, wherein a gas inlet and a gas outlet are formed in the purification tower, a material feeding pipe is connected to the top of the purification tower, a material discharging pipe is connected to the bottom of the purification tower, buffer tanks are respectively connected to the material feeding pipe and the material discharging pipe, a material inlet and a material outlet are respectively formed in the upper portion and the lower portion of each buffer tank, a feeding sealing assembly and a discharging sealing assembly are respectively arranged on the material inlet and the material outlet, a blowing gas inlet and a blowing gas outlet are respectively formed in the wall surface of each buffer tank, a saturated material conveying pipeline is arranged between the material outlet of the buffer tank connected with the material discharging pipe and the inlet of the regeneration tower, and a regenerated material conveying pipeline is arranged between the outlet of the regeneration tower and the material inlet of the buffer tank connected with the material feeding pipe. The utility model respectively arranges the buffer tanks before and after the feeding and discharging of the purification tower, thereby ensuring the continuous work of the purification tower during the feeding and discharging and ensuring the continuous operation of the adsorption and regeneration processes.
Description
Technical Field
The utility model relates to a moving bed coal gas desulfurization system, and belongs to the technical field of coal gas purification.
Background
Coke oven gas and blast furnace gas are important gaseous fuels of iron and steel plants, and a plurality of tubular furnaces, heating furnaces, gas power generation boilers and the like take the coke oven gas and the blast furnace gas as fuels, 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 end treatment technology. The requirements for fine desulfurization of coal gas at present 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 excess coefficient is calculated by 1.2), the investment for end treatment is large, the technical economy is poor, and in addition, the space of a small gas combustion furnace is dispersed, so that the small gas amount irregular discharge is more serious in environmental pollution.
Therefore, the gas source treatment technology becomes a development direction, materials such as activated carbon, molecular sieve, microcrystal and the like and special physical properties have good removal effect on organic sulfur in the gas, from the current application, the gas is toxic, inflammable and explosive gas, the requirement on the gas tightness of a gas desulfurization device is high for ensuring safety, the current gas desulfurization technology mostly adopts a fixed bed form, the materials must be replaced or regenerated in time after being adsorbed and saturated, two forms are generally adopted at present, one form is to transport the materials in the fixed bed out, transport the materials to a regeneration device for regeneration, and then supplement new materials or regenerated materials, 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 material regeneration 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 desulfurization system in the form operates for a plurality of cycles, because the adsorption capacity of the materials is limited, the desulfurization system loses adsorption capacity after adsorbing a certain amount of sulfur-containing components, and meanwhile, the phenomenon of dust accumulation and caking is caused by gradual accumulation of dust and broken materials intercepted by a bed layer, so that the operation resistance of the purification tower is gradually increased, the uniformity of air flow distribution is influenced, the purification and regeneration effects are reduced, and the purification tower needs to be periodically emptied for replacement of active carbon. In the replacement and regeneration process of the materials, the working procedures of cutting off gas, purging inert gas, replacement or regeneration and the like need to be finished, the operation control process is complicated, and the system operation efficiency is further reduced. Therefore, the operation mode of the gas purification tower in the prior art is discontinuous operation, the integral operation rate is not high, and the requirement of long-term stable operation cannot be met.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide a moving bed gas desulfurization system which enables adsorption and regeneration to continuously operate and ensures the stability of the operation of the gas desulfurization system, so as to solve the technical problem of low operation efficiency of the fixed bed gas desulfurization system in the prior art.
The utility model adopts the following technical scheme: the utility model provides a remove bed gas desulfurization system, it includes purifying column and regenerator, is equipped with coal gas import and coal gas export on the purifying column, and the purifying column top is connected with the material inlet pipe, and the purifying column bottom is connected with the material and arranges the material pipe, be connected with the buffer tank on material inlet pipe and the material is arranged the material pipe respectively, the upper portion and the lower part of buffer tank are equipped with material import and material export respectively, are equipped with feeding seal assembly and row material seal assembly on material import and the material export respectively, all are equipped with purge gas import and purge gas export on the wall of every buffer tank, and the material is arranged and is equipped with saturated material pipeline between the material export of the buffer tank of union coupling and the import of regenerator, is equipped with the reclaimed material pipeline between the export of regenerator and the material import of the buffer tank that the material inlet pipe is connected.
There is material screening equipment in the export of regeneration tower, is equipped with undersize thing export and oversize thing export on the material screening equipment, is connected with undersize thing pipeline on the undersize thing export, and oversize thing export is connected with regeneration material pipeline.
The purifying tower have two sets ofly, the material export of the buffer tank of every group purifying tower material row material union coupling all is connected with saturated material pipeline, the material import of the buffer tank that every group purifying tower material inlet pipe is connected all is connected with reclaimed material pipeline.
A set of purifying column includes more than two tower bodies, and every tower body top all is equipped with the material inlet pipe, and every tower body bottom is equipped with the material respectively and arranges the material pipe, and the material inlet pipe of each tower body top connects in parallel on the material export of a buffer tank, and the material of each tower body bottom is arranged the material pipe and is connected in parallel on the material import of another buffer tank.
The tower body adopts a cylindrical structure.
The buffer tank adopts a circular truncated cone structure with the upper part of the circular truncated cone structure being cylindrical and the lower part of the circular truncated cone structure being gradually reduced downwards.
The position of the purge gas inlet is lower than that of the purge gas outlet.
The position of the gas inlet is lower than that of the gas outlet.
And a coal gas inlet sealing component and a coal gas outlet sealing component are respectively arranged on the coal gas inlet and the coal gas outlet.
The utility model has the beneficial effects that: when the utility model is operated, the coal gas is led out from the designated position before purification, the coal gas enters the purification tower from the coal gas inlet, and the sulfur-containing components in the coal gas are discharged from the coal gas outlet after being adsorbed by the materials in the purification tower; when the material is saturated or is about to saturate and needs to be discharged in the purification tower, the feeding sealing assembly and the discharging sealing assembly of the buffer tank at the bottom of the purification tower are both closed, inert gas is blown to the buffer tank to remove gas in the tank, oxygen is prevented from entering the purification tower to cause safety risk, the feeding sealing assembly is opened after blowing is completed, the material flows into the buffer tank, partial coal gas is dissipated into the buffer tank in the purification tower, the feeding sealing assembly is closed when a certain material level is reached, inert gas is blown to the buffer tank again to remove the coal gas in the buffer tank, the discharging sealing assembly is opened after blowing is completed, the material flows out of the buffer tank, the discharging sealing assembly is closed after discharging is completed, and the purification tower is circularly executed according to the process when discharging is performed again. The material that the buffer tank discharged bottom the purification tower sends to the regenerator column through saturated material pipeline and heats regeneration, and the material after the regeneration resumes adsorption efficiency, sends to the retrieval and utilization of purification tower top by the regeneration material pipeline.
When the purifying tower feeds, the feeding sealing assembly and the discharging sealing assembly of the buffer tank at the top of the purifying tower are both closed, inert gas purging is carried out on the buffer tank to remove gas in the tank, safety risk caused by gas leakage is prevented, the feeding sealing assembly is opened after purging is completed, foreign materials flow into the buffer tank, the feeding sealing assembly is closed when a certain material level is reached, inert gas purging is carried out on the buffer tank again to remove air in the tank, the discharging sealing assembly is opened after purging is completed, the materials flow into the purifying tower, partial gas in the purifying tower is dissipated into the buffer tank, and the discharging sealing assembly is closed after discharging is completed. The purification tower is circularly operated according to the process when being fed again.
During the feeding and discharging processes of the purification tower, coal gas in the purification tower is continuously introduced, the coal gas purification is not interrupted, and only corresponding inert gas replacement operation needs to be carried out on the buffer tank when the materials are replaced, so that the system is high in operating rate and good in stability. And because the volume of the buffer tank is small, the consumed inert gas quantity and the time required by replacement are both greatly reduced.
The utility model leads the adsorption process and the regeneration process to be respectively carried out in the purification tower and the regeneration tower, and the buffer tanks are respectively arranged before the feeding and after the discharging of the purification tower, thereby ensuring the continuous work of the purification tower during the feeding and the discharging, leading the adsorption and the regeneration to be continuously operated, ensuring the operation stability of the coal gas desulfurization system and improving the automation degree thereof.
Preferably, a material screening device is arranged at an outlet of the regeneration tower, dust and crushed materials in the coal gas are discharged from an undersize outlet and an undersize pipeline, and the screened regenerated materials enter a regenerated material conveying pipeline from an oversize outlet.
Preferably, a plurality of groups of purification towers are adopted, so that the system has higher operation efficiency.
Preferably, a group of purification towers adopts a plurality of tower bodies connected in parallel, and the plurality of tower bodies share one set of buffer tank, so that the equipment arrangement can be optimized and the investment can be reduced.
Drawings
FIG. 1 is a schematic diagram of a moving bed gas desulfurization system of example 1 of the present invention;
FIG. 2 is an enlarged view of the surge tank of FIG. 1;
FIG. 3 is a schematic view of a moving bed gas desulfurization system of example 2 of the present invention.
In the figure: 1-a purification tower, 11-a gas inlet, 12-a gas outlet, 13-a material feeding pipe, 14-a material discharging pipe, 2-a regeneration tower, 3-a buffer tank, 31-a feeding sealing component, 32-a discharging sealing component, 33-a purge gas inlet, 34-a purge gas outlet, 4-a saturated material conveying pipeline, 5-a regenerated material conveying pipeline, 6-a material screening device, 61-a screen underflow outlet, 62-a screen overflow outlet and 63-a screen underflow pipeline.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments.
Example 1:
the moving bed gas desulfurization system of embodiment 1 of the present invention is shown in fig. 1, and the moving bed gas desulfurization system of this embodiment includes a purification tower 1 and a regeneration tower 2, wherein the purification tower 1 is provided with a gas inlet 11 and a gas outlet 12, the position of the gas inlet 11 is lower than the position of the gas outlet 12, and the gas inlet, the gas inlet 11 and the gas outlet 12 are respectively provided with a gas inlet seal assembly and a gas outlet seal assembly. The top of purification tower 1 is connected with material inlet pipe 13, and purification tower 1 bottom is connected with the material and arranges material pipe 14, be connected with buffer tank 3 on material inlet pipe 13 and the material row material pipe 14 respectively, the structure of buffer tank 3 is as shown in fig. 2, and the upper portion and the lower part of buffer tank 3 are equipped with material import and material export respectively, are equipped with feeding seal assembly 31 and arrange material seal assembly 32 on material import and the material export respectively, all are equipped with purge gas import 33 and purge gas export 34 on the wall of every buffer tank 1, buffer tank 3 adopts upper portion to be the cylinder structure, the round platform structure of lower part for dwindling gradually downwards. The purge gas inlet 33 is located lower than the purge gas outlet 34. A saturated material conveying pipeline 4 is arranged between the material outlet of the buffer tank 3 connected with the material discharge pipe 14 and the inlet of the regeneration tower 2, and a regenerated material conveying pipeline 5 is arranged between the outlet of the regeneration tower 2 and the material inlet of the buffer tank 3 connected with the material feed pipe 13.
The outlet of the regeneration tower 2 is provided with a material screening device 6, the material screening device 6 is provided with a screen underflow outlet 61 and a screen overflow outlet 62, the screen underflow outlet 61 is connected with a screen underflow pipeline 63, and the screen overflow outlet 62 is connected with a regenerated material conveying pipeline 5.
In this embodiment, the purifying tower 1 has two sets ofly, and the material export of the buffer tank 3 that the material discharge pipe 14 of every group purifying tower 1 is connected all is connected with saturated material pipeline 4, and the material import of the buffer tank 3 that every group purifying tower 1 material inlet pipe 13 of every group is connected all is connected with regeneration material pipeline 5.
When the moving bed gas desulfurization system is used, gas before purification is led out from a designated position and then is sent to a gas inlet of a purification tower by utilizing the self pressure of the gas or after pressurization, materials in the purification tower are activated carbon or activated coke, the gas is subjected to sulfur-containing component removal in the purification tower by utilizing the adsorption performance of the materials, and the purified gas is converged into a main purified gas pipe through a gas outlet and is sent to each gas point for gas combustion, so that source treatment is realized. Because this system sets up the buffer tank respectively at purification tower top and bottom, can renew the replacement to the interior material of tower under the normal condition of letting in coal gas of purification tower, the material that adsorbs the saturation in the purification tower can in time discharge outside the tower, and the dust that bed interception was down is taken out along with the material synchronization to the material of discharge, and the dust in the tower can not be accumulated, and the purification tower resistance is stable, and the purification tower operating condition is continuous work.
The specific operation mode is that the purification tower continuously feeds coal gas, and the purification tower works in positive pressure due to higher pressure of the coal gas; when the purifying column arranges the material, the feeding seal assembly and the row material seal assembly of purifying column bottom buffer tank all close, carry out inert gas to the buffer tank and sweep in order to get rid of jar internal gas, prevent that oxygen from getting into the purifying column and causing the safety risk, the feeding seal assembly opens after sweeping the completion, material flows to in the buffer tank, also have partial coal gas to dissipate to the buffer tank in the purifying column, feeding seal assembly closes when reaching a certain material level, carry out inert gas again and sweep in order to get rid of the interior coal gas of buffer tank to the buffer tank, it arranges the material seal assembly and opens to sweep the completion back, the material flows out the buffer tank, arrange the material after finishing and arrange the material seal assembly and close. The purification tower is circularly executed according to the process when discharging again.
The discharged materials are conveyed to a regeneration tower through a saturated material conveying pipeline for heating regeneration, the regenerated materials recover the adsorption capacity, the intercepted dust and crushed materials in the coal gas are removed through material screening equipment, and oversize materials are conveyed to the upper part of the purification tower through a regenerated material conveying pipeline for recycling.
When the purifying tower feeds, the feeding sealing assembly and the discharging sealing assembly of the buffer tank at the top of the purifying tower are both closed, inert gas purging is carried out on the buffer tank to remove gas in the tank, safety risk caused by gas leakage is prevented, the feeding sealing assembly is opened after purging is completed, foreign materials flow into the buffer tank, the feeding sealing assembly is closed when a certain material level is reached, inert gas purging is carried out on the buffer tank again to remove air in the tank, the discharging sealing assembly is opened after purging is completed, the materials flow into the purifying tower, partial gas in the purifying tower is dissipated into the buffer tank, and the discharging sealing assembly is closed after discharging is completed. The purification tower is circularly operated according to the process when being fed again.
During the feeding and discharging processes of the purification tower, coal gas in the purification tower is continuously introduced, the coal gas purification is not interrupted, and only corresponding inert gas replacement operation needs to be carried out on the buffer tank when the materials are replaced, so that the system is high in operating rate and good in stability. And because the volume of the buffer tank is small, the consumed inert gas quantity and the time required by replacement are both greatly reduced.
Example 2:
the moving bed gas desulfurization system of the present example is shown in fig. 3, and is different from example 1 only in that: the purification towers in the embodiment 1 are divided into two groups, and the tower body of each group of purification towers is single; the purification tower in this embodiment is only one group, and the group of purification tower of this embodiment includes four tower bodies, and every tower body top all is equipped with the material inlet pipe, and every tower body bottom is equipped with material respectively and arranges the material pipe, and the material inlet pipe of each tower body top connects in parallel on the material export of a buffer tank, and the material of each tower body bottom is arranged the material pipe and is connected in parallel on the material import of another buffer tank. The tower body adopts a cylindrical structure. The rest of this embodiment is the same as embodiment 1, and therefore, the description thereof is omitted.
In other embodiments of the present invention, the number of groups of the purification towers can be determined according to actual needs, and the number of the tower bodies in one group of the purification towers is also flexibly selected according to actual needs.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (9)
1. The utility model provides a remove bed gas desulfurization system, its includes purifying column and regenerator column, is equipped with coal gas import and coal gas outlet on the purifying column, and the purifying column top is connected with the material inlet pipe, and the purifying column bottom is connected with material row material pipe, its characterized in that: be connected with the buffer tank on material inlet pipe and the material row material pipe respectively, the upper portion and the lower part of buffer tank are equipped with material import and material export respectively, be equipped with feeding seal assembly and row material seal assembly on material import and the material export respectively, all be equipped with purge gas import and purge gas export on the wall of every buffer tank, be equipped with saturated material pipeline between the material export of the buffer tank of material row union coupling and the import of regenerator column, be equipped with the reclaimed material pipeline between the export of regenerator column and the material import of the buffer tank that material inlet pipe is connected.
2. The moving bed gas desulfurization system according to claim 1, characterized in that: there is material screening equipment in the export of regeneration tower, is equipped with undersize thing export and oversize thing export on the material screening equipment, is connected with undersize thing pipeline on the undersize thing export, and oversize thing export is connected with regeneration material pipeline.
3. The moving bed gas desulfurization system according to claim 1, characterized in that: the purifying tower have two sets ofly, the material export of the buffer tank of every group purifying tower material row material union coupling all is connected with saturated material pipeline, the material import of the buffer tank that every group purifying tower material inlet pipe is connected all is connected with reclaimed material pipeline.
4. The moving bed gas desulfurization system according to claim 1, characterized in that: a set of purifying column includes more than two tower bodies, and every tower body top all is equipped with the material inlet pipe, and every tower body bottom is equipped with the material respectively and arranges the material pipe, and the material inlet pipe of each tower body top connects in parallel on the material export of a buffer tank, and the material of each tower body bottom is arranged the material pipe and is connected in parallel on the material import of another buffer tank.
5. The moving bed gas desulfurization system according to claim 4, characterized in that: the tower body adopts a cylindrical structure.
6. The moving bed gas desulfurization system according to claim 1, characterized in that: the buffer tank adopts a circular truncated cone structure with the upper part of the circular truncated cone structure being cylindrical and the lower part of the circular truncated cone structure being gradually reduced downwards.
7. The moving bed gas desulfurization system according to claim 1, characterized in that: the position of the purge gas inlet is lower than that of the purge gas outlet.
8. The moving bed gas desulfurization system according to claim 1, characterized in that: the position of the gas inlet is lower than that of the gas outlet.
9. The moving bed gas desulfurization system according to claim 1, characterized in that: and a coal gas inlet sealing component and a coal gas outlet sealing component are respectively arranged on the coal gas inlet and the coal gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122819633.3U CN216337472U (en) | 2021-11-17 | 2021-11-17 | Moving bed coal gas desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122819633.3U CN216337472U (en) | 2021-11-17 | 2021-11-17 | Moving bed coal gas desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216337472U true CN216337472U (en) | 2022-04-19 |
Family
ID=81149641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122819633.3U Active CN216337472U (en) | 2021-11-17 | 2021-11-17 | Moving bed coal gas desulfurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216337472U (en) |
-
2021
- 2021-11-17 CN CN202122819633.3U patent/CN216337472U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107961770B (en) | Regeneration system and regeneration method of adsorbent in coke oven flue gas purification | |
| CN206646064U (en) | A kind of dry coke quenching auxiliary | |
| CN103446830A (en) | Flue gas purifying system | |
| CN103405982B (en) | Smoke purification device | |
| CN113122340B (en) | Blast furnace gas purification method | |
| CN108636108A (en) | Tail gas clean-up technique is produced in change based on the collaboration of coking production process | |
| CN105823074A (en) | Oxygen-enriched and energy-saving combustion system capable of achieving zero emission of nitrogen oxides | |
| CN107198935A (en) | A kind of cylindrical shape smoke eliminator and its processing method | |
| CN110252068A (en) | The desulfurizing and purifying method of blast furnace gas | |
| CN203400612U (en) | Flue gas purification system | |
| CN113019094A (en) | Device and method for efficiently removing mercury by using sulfur-containing waste gas | |
| CN111286368A (en) | Method and device for adsorption desulfurization of blast furnace gas | |
| CN112521987A (en) | Blast furnace gas bypass desulfurization method and device | |
| CN216337472U (en) | Moving bed coal gas desulfurization system | |
| JP4814621B2 (en) | Waste disposal method | |
| CN108568292B (en) | Method for preparing efficient adsorbent by utilizing fluidized bed gasification fly ash and industrial waste sulfuric acid | |
| CN215209279U (en) | Active carbon integration blast furnace gas fine desulfurization comprehensive reaction treatment device | |
| CN214004539U (en) | Coal gas desulfurization system combining fixed bed and moving bed | |
| CN103316563B (en) | Blue charcoal tail gas desulfurization purifier and using method thereof | |
| CN111334340A (en) | Method for purifying blast furnace gas | |
| CN108525466B (en) | Low sulfur flue gas desulfurization and denitrification device | |
| CN203400632U (en) | Flue gas purification device | |
| CN110252069A (en) | The sulfur method of blast furnace gas | |
| CN215975689U (en) | Blast furnace gas dry-method desulfurization reaction tank | |
| CN212451324U (en) | Dry purification device for total sulfur removal of blast furnace gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |