CN113025396A - Liquid supply and drainage system of novel blast furnace gas desulfurization tower and operation method - Google Patents
Liquid supply and drainage system of novel blast furnace gas desulfurization tower and operation method Download PDFInfo
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- CN113025396A CN113025396A CN202110260242.4A CN202110260242A CN113025396A CN 113025396 A CN113025396 A CN 113025396A CN 202110260242 A CN202110260242 A CN 202110260242A CN 113025396 A CN113025396 A CN 113025396A
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- liquid
- pipe
- desulfurization
- cleaning
- blast furnace
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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
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
-
- 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
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
Abstract
The invention discloses a liquid supply and drainage system of a novel blast furnace gas desulfurization tower and an operation method, and relates to the technical field of blast furnace gas desulfurization; the device comprises a filler-free tower body, a liquid supply system and a liquid discharge system, wherein the liquid supply system is provided with a cleaning liquid pipe and a desulfurization liquid pipe; the upper layer of the liquid collecting tank is funnel-shaped, the lower layer of the liquid collecting tank is a tank body, the liquid discharging system comprises a lower liquid discharging port and an upper liquid discharging port, the lower liquid discharging port is positioned at the lower end of one side of the lower layer of the liquid collecting tank, and the upper liquid discharging port is positioned in the middle of the liquid collecting tank of the tower body; a connecting pipe is arranged on one side of the tower body, a tee joint is respectively arranged at the upper end and the lower end of the connecting pipe, one end of the tee joint at the upper end is connected with an air pipe and is provided with a vent communicated with the atmosphere, the other end of the tee joint at the upper end is communicated with an upper liquid discharge port, one end of the tee joint at the lower end is communicated with a; the invention can ensure that the blast furnace gas desulfurization tower can safely and stably operate under large spraying amount, and is beneficial to improving the desulfurization efficiency of the desulfurization tower.
Description
Technical Field
The invention relates to the technical field of blast furnace gas desulfurization, in particular to a liquid supply and drainage system of a novel blast furnace gas desulfurization tower and an operation method.
Background
Most of the sulfur in blast furnace gasWith H2S is present in the form of H2S is converted into SO with the combustion of coal gas2Harming the living environment of people and aiming at the SO generated after the combustion of the byproduct blast furnace gas of the iron and steel enterprises2The problem of exceeding standard is that the tail end treatment mode is adopted in the past, namely the flue gas after the blast furnace gas is combusted is desulfurized. With the adjustment of national industrial policy, SO is treated2The emission requirement is greatly improved, and the tail end treatment can not meet the emission requirement, so that the iron and steel enterprises need to realize the fine desulfurization of blast furnace gas from the source, and H in the producer gas2The degree of removal of S has become an important indicator.
The blast furnace gas source fine desulfurization method mainly comprises a dry method desulfurization method and a wet method desulfurization method, wherein the main equipment is a desulfurization tower; however, unlike the well-developed flue gas desulfurization, the blast furnace gas has the particularity of large flow, low pressure, complex composition, flammability and explosiveness, so the requirement of the blast furnace gas on the desulfurization tower is far higher than that of the common flue gas desulfurization, and the research of the blast furnace gas desulfurization tower is still in the initial stage at present;
the common flue gas desulfurization tower is provided with a plurality of layers of gas distribution devices, liquid distribution devices, spraying devices, demisting devices, washing devices and the like, so that the flue gas desulfurization can be better realized, however, when the desulfurization tower is used for blast furnace gas desulfurization in actual production, various problems occur, the gas flow in the tower is not smooth, the resistance is large, and the tower is easy to block, so that the pressure drop of the whole gas supply gas circuit is large, and the normal production cannot be realized;
to this, the industry is discussed and is decided to adopt once again in the empty tower spray mode that flue gas desulfurization starting stage was given up, there is not the filled tower promptly, with this solve the interior resistance of tower big, the problem of easy jam, however there is not the filled tower to draw forth new problem again, desulfurization efficiency is not high enough promptly, for this reason, need increase the volume of spraying, improve the desulfurization effect of desulfurizing tower, but the condition of air inlet refluence has appeared in the in-service use, through the analysis discovery, the confession liquid and the drainage system of original non-filled desulfurizing tower can't be competent at this work, this is because the confession liquid volume has been increaseed, drain end drainage speed is limited, the interior waste liquid height of collecting tank risees gradually and leads to the fact.
Disclosure of Invention
The invention aims to provide a liquid supply and drainage system of a novel blast furnace gas desulfurization tower, so as to ensure that the blast furnace gas desulfurization tower can safely and stably operate under the condition of large spraying amount.
In order to achieve the purpose, the invention provides the following technical scheme: a liquid supply and drainage system of a novel blast furnace gas desulfurization tower comprises a filler-free tower body, a liquid supply system and a drainage system, wherein a plurality of spray devices are arranged on the tower body, a liquid collection tank is arranged at the lower end of the tower body, each spray device comprises a desulfurization spray head and a cleaning spray head, the liquid supply system is provided with a cleaning liquid pipe and a desulfurization liquid pipe, a first water seal is arranged on the cleaning liquid pipe and communicated to the cleaning spray heads, and a second water seal is arranged on the desulfurization liquid pipe and communicated to the desulfurization spray heads; the liquid collecting tank is divided into an upper layer and a lower layer, the upper layer of the liquid collecting tank is funnel-shaped, the lower layer of the liquid collecting tank is a tank body, the lower end of the upper layer is communicated to the lower layer, the liquid discharging system comprises a lower liquid discharging port and an upper liquid discharging port, the lower liquid discharging port is positioned at the lower end of one side of the lower layer of the liquid collecting tank and is connected with a lower liquid discharging pipe penetrating through the wall of the tower body, the upper liquid discharging port is positioned in the middle of the liquid collecting tank of the tower body and is provided with an upper liquid discharging pipe; a connecting pipe is arranged on one side of the tower body, a tee joint is respectively arranged at the upper end and the lower end of the connecting pipe, one end of the tee joint at the upper end is connected with the air pipe and provided with a vent communicated with the atmosphere, the vent is higher than the upper drainage port, the other end of the tee joint at the upper end is communicated to a drainage end of the water seal, one end of the tee joint at the lower end is communicated to the lower drainage pipe, the other end is.
Preferably, the washing liquid pipe is equipped with the moisturizing pipe and communicates to the desulfurization liquid pipe, is equipped with the valve on the pipeline of washing liquid pipe, desulfurization liquid pipe and moisturizing pipe respectively.
Preferably, the first water seal, the second water seal and the third water seal are all U-shaped pipes.
Preferably, the air pipe and one side of the connecting pipe are provided with a liquid level meter, the lower end of the liquid level meter is communicated with the middle part of the connecting pipe, and the upper end of the liquid level meter is communicated with the middle part of the air pipe.
Preferably, the air tube and the connecting tube are transparent tubes.
The invention provides another technical scheme that: an operation method of a liquid supply and drainage system of a novel blast furnace gas desulfurization tower comprises the following steps: injecting clear water or desulfurization liquid into the first water seal, the second water seal and the third water seal to seal; when in desulfurization, the desulfurization liquid is introduced through the desulfurization liquid pipe and is sprayed in the tower body through the desulfurization spray head, the discharged desulfurization liquid is collected from the lower liquid discharge pipe for reuse, and blast furnace gas can be introduced into the tower body to start desulfurization when the desulfurization liquid is continuously discharged; when the cleaning liquid is cleaned, clear water or cleaning liquid is introduced through the cleaning liquid pipe, the cleaning spray head sprays the cleaning liquid in the tower body to block or seal the liquid outlet pipe, the liquid level height in the air vent is observed, namely the liquid level height in the liquid collecting tank is reflected, when the liquid level is higher than the tee joint, the liquid outlet pipe is recovered to start to discharge the cleaning liquid, the clear water or the cleaning liquid is stopped to be introduced into the cleaning liquid pipe after the cleaning is carried out for 5-10min until the liquid is not discharged from the liquid outlet pipe, and the cleaning step is repeated for 2-3 times.
Compared with the prior art, the invention has the beneficial effects that:
the liquid supply and drainage system of the novel blast furnace gas desulfurization tower is provided with an upper liquid drainage port and a lower liquid drainage port, wherein the lower liquid drainage port can normally drain liquid and the liquid drainage speed is lower than the liquid supply speed, so that airtightness can be ensured; in addition, the three water seals can ensure the air tightness and safety of the system, can be well suitable for blast furnace gas desulfurization, and prevent safety accidents.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. cleaning a liquid pipe; 2. water sealing I; 3. a desulfurization liquid pipe; 4. water sealing II; 5. a lower drainage outlet; 6. an upper drainage port; 7. water sealing; 8. a connecting pipe; 9. a tee joint; 10. a vent; 11. a liquid outlet pipe.
Detailed Description
As shown in fig. 1, a liquid supply and drainage system of a novel blast furnace gas desulfurization tower comprises a filler-free tower body, a liquid supply system and a drainage system, wherein a plurality of spray devices are arranged on the tower body, a liquid collecting tank is arranged at the lower end of the tower body, each spray device comprises a desulfurization spray head and a cleaning spray head, the liquid supply system is provided with a cleaning liquid pipe 1 and a desulfurization liquid pipe 3, a first water seal 2 is arranged on the cleaning liquid pipe 1 and communicated to the cleaning spray head, and a second water seal 4 is arranged on the desulfurization liquid pipe 3 and communicated to the desulfurization spray head; in order to adjust the concentration of the desulfurization solution conveniently, a liquid supplementing pipe is arranged on the cleaning liquid pipe 1 and communicated to the desulfurization liquid pipe 3, and valves are respectively arranged on pipelines of the cleaning liquid pipe 1, the desulfurization liquid pipe 3 and the liquid supplementing pipe; the liquid collecting tank is divided into an upper layer and a lower layer, the upper layer of the liquid collecting tank is funnel-shaped, the lower layer of the liquid collecting tank is a tank body, the lower end of the upper layer is communicated to the lower layer, the liquid discharging system comprises a lower liquid discharging port 5 and an upper liquid discharging port 6, wherein the lower liquid discharging port 5 is positioned at the lower end of one side of the lower layer of the liquid collecting tank and is connected with a lower liquid discharging pipe penetrating through the wall of the tower body, the upper liquid discharging port 6 is positioned in the middle of the liquid collecting tank of the tower body and is provided with an upper liquid discharging pipe communicated; a connecting pipe 8 is arranged on one side of the tower body, a tee joint 9 is respectively arranged at the upper end and the lower end of the connecting pipe 8, one end of the tee joint 9 at the upper end is connected with an air pipe and is provided with a vent 10 communicated with the atmosphere, the vent 10 is higher than the upper liquid discharge port 6, the other end of the tee joint 9 at the upper end is communicated to a liquid discharge end of a water seal tee 7, one end of the tee joint 9 at the lower end is communicated to a lower liquid discharge pipe, a liquid.
The first water seal 2, the second water seal 4 and the third water seal 7 can be U-shaped pipes as shown in the figure.
In a preferred embodiment of the invention, a liquid level meter is arranged on one side of the air pipe and the connecting pipe 8, the lower end of the liquid level meter is communicated with the middle part of the connecting pipe 8, and the upper end of the liquid level meter is communicated with the middle part of the air pipe; in another embodiment, the air pipe and the connecting pipe 8 can be transparent pipes, so that the liquid level can be directly observed without an additional liquid level meter; in both embodiments, the liquid level gauge can no longer be installed on the tower side wall.
The operation method of the liquid supply and drainage system comprises the following steps: injecting clear water or desulfurization liquid into the water seal I2, the water seal II 4 and the water seal III 7 for water seal; when in desulfurization, the desulfurization liquid is introduced through the desulfurization liquid pipe 3 and is sprayed in the tower body through the desulfurization spray head, the discharged desulfurization liquid is collected from the lower liquid discharge pipe for reuse, and blast furnace gas can be introduced into the tower body to start desulfurization when the desulfurization liquid is continuously discharged; when cleaning, clear water or cleaning liquid is introduced through the cleaning liquid pipe 1, and the cleaning spray head sprays in the tower body to block or seal the liquid outlet pipe 11, the liquid level height in the vent 10 is observed, namely the liquid level height in the liquid collecting tank is obtained through reaction, when the liquid level is higher than the tee joint 9, the liquid outlet pipe 11 is recovered to start to discharge the cleaning liquid, the clear water or the cleaning liquid is stopped to be introduced into the cleaning liquid pipe 1 after cleaning for 5-10min until the liquid is not discharged from the liquid outlet pipe 11, and the cleaning step is repeated for 2-3 times.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (6)
1. The utility model provides a novel liquid supply drainage system of blast furnace gas desulfurizing tower, includes tower body, liquid supply system and the drainage system of packless, is equipped with a plurality of spray set on the tower body, and the tower body lower extreme is equipped with the collecting tank, its characterized in that: the spraying device comprises a desulfurization nozzle and a cleaning nozzle, the liquid supply system is provided with a cleaning liquid pipe (1) and a desulfurization liquid pipe (3), wherein the cleaning liquid pipe (1) is provided with a water seal I (2) and communicated to the cleaning nozzle, and the desulfurization liquid pipe (3) is provided with a water seal II (4) and communicated to the desulfurization nozzle; the liquid collecting tank is divided into an upper layer and a lower layer, the upper layer of the liquid collecting tank is funnel-shaped, the lower layer of the liquid collecting tank is a tank body, the lower end of the upper layer is communicated with the lower layer, the liquid discharging system comprises a lower liquid discharging port (5) and an upper liquid discharging port (6), wherein the lower liquid discharging port (5) is positioned at the lower end of one side of the lower layer of the liquid collecting tank and is connected with a lower liquid discharging pipe penetrating through the wall of the tower body, the upper liquid discharging port (6) is positioned in the middle of the liquid collecting tank of the tower body and is provided with an upper liquid discharging pipe communicated; a connecting pipe (8) is arranged on one side of the tower body, a tee joint (9) is respectively installed at the upper end and the lower end of the connecting pipe (8), one end of the tee joint (9) at the upper end is connected with an air pipe and is provided with an air vent (10) for communicating with the atmosphere, the height of the air vent (10) is higher than that of an upper liquid discharge port (6), the other end of the tee joint (9) at the upper end is communicated to a liquid discharge end of a water seal tee (7), one end of the tee joint (9) at the lower end is communicated to a lower.
2. The liquid feeding and draining system of the novel blast furnace gas desulfurization tower according to claim 1, characterized in that: the cleaning liquid pipe (1) is provided with a liquid supplementing pipe communicated to the desulfurization liquid pipe (3), and valves are respectively arranged on the pipelines of the cleaning liquid pipe (1), the desulfurization liquid pipe (3) and the liquid supplementing pipe.
3. The liquid feeding and draining system of the novel blast furnace gas desulfurization tower according to claim 1, characterized in that: the first water seal (2), the second water seal (4) and the third water seal (7) are all U-shaped pipes.
4. The liquid feeding and draining system of the novel blast furnace gas desulfurization tower according to claim 1, characterized in that: the liquid level meter is installed to one side of trachea and connecting pipe (8), and the liquid level meter lower extreme intercommunication connecting pipe (8) middle part, upper end intercommunication trachea middle part.
5. The liquid feeding and draining system of the novel blast furnace gas desulfurization tower according to claim 1, characterized in that: the air pipe and the connecting pipe (8) are transparent pipes.
6. The operation method of the liquid feeding and draining system of the novel blast furnace gas desulfurization tower according to any one of claims 1 to 5, is characterized by comprising the following steps: clear water or desulfurization liquid is injected into the water seal I (2), the water seal II (4) and the water seal III (7) for water seal; when in desulfurization, the desulfurization liquid is introduced through the desulfurization liquid pipe (3), and is sprayed in the tower body through the desulfurization spray head, the discharged desulfurization liquid is collected from the lower liquid discharge pipe for reuse, and when the desulfurization liquid is continuously discharged, blast furnace gas can be introduced into the tower body to start desulfurization; when the cleaning tower is cleaned, clear water or cleaning liquid is introduced through the cleaning liquid pipe (1), the cleaning spray head sprays in the tower body to block or seal the liquid outlet pipe (11), the liquid level height in the vent hole (10) is observed, namely the liquid level height in the liquid collecting tank is obtained through reaction, when the liquid level is higher than the tee joint (9), the liquid outlet pipe (11) is recovered to start to discharge the cleaning liquid, the clear water or the cleaning liquid is stopped to be introduced into the cleaning liquid pipe (1) after the cleaning is carried out for 5-10min until the liquid is not discharged from the liquid outlet pipe (11), and the cleaning step is repeated for 2-3 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110260242.4A CN113025396A (en) | 2021-03-10 | 2021-03-10 | Liquid supply and drainage system of novel blast furnace gas desulfurization tower and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110260242.4A CN113025396A (en) | 2021-03-10 | 2021-03-10 | Liquid supply and drainage system of novel blast furnace gas desulfurization tower and operation method |
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| CN113025396A true CN113025396A (en) | 2021-06-25 |
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| CN202110260242.4A Pending CN113025396A (en) | 2021-03-10 | 2021-03-10 | Liquid supply and drainage system of novel blast furnace gas desulfurization tower and operation method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012025900A (en) * | 2010-07-27 | 2012-02-09 | Jfe Steel Corp | Coke oven gas desulfurizer |
| CN103657392A (en) * | 2013-12-12 | 2014-03-26 | 南京大学 | Desulfurization absorption tower for removing 'gypsum rain' in flue gas desulfurization of coal-fired boiler |
| CN203494397U (en) * | 2013-10-10 | 2014-03-26 | 广西奥士达环境工程有限公司 | Spray water bath dust removal desulfurization tower |
| CN104549819A (en) * | 2014-12-31 | 2015-04-29 | 安徽省大富光电科技有限公司 | Spraying device |
| CN105861078A (en) * | 2016-05-27 | 2016-08-17 | 江苏省冶金设计院有限公司 | Tower bottom drainage and water seal device of shaft furnace gas scrubber |
| CN111704938A (en) * | 2020-06-29 | 2020-09-25 | 马鞍山钢铁股份有限公司 | Gas cleaning tower integrated with safety water seal |
-
2021
- 2021-03-10 CN CN202110260242.4A patent/CN113025396A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012025900A (en) * | 2010-07-27 | 2012-02-09 | Jfe Steel Corp | Coke oven gas desulfurizer |
| CN203494397U (en) * | 2013-10-10 | 2014-03-26 | 广西奥士达环境工程有限公司 | Spray water bath dust removal desulfurization tower |
| CN103657392A (en) * | 2013-12-12 | 2014-03-26 | 南京大学 | Desulfurization absorption tower for removing 'gypsum rain' in flue gas desulfurization of coal-fired boiler |
| CN104549819A (en) * | 2014-12-31 | 2015-04-29 | 安徽省大富光电科技有限公司 | Spraying device |
| CN105861078A (en) * | 2016-05-27 | 2016-08-17 | 江苏省冶金设计院有限公司 | Tower bottom drainage and water seal device of shaft furnace gas scrubber |
| CN111704938A (en) * | 2020-06-29 | 2020-09-25 | 马鞍山钢铁股份有限公司 | Gas cleaning tower integrated with safety water seal |
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Application publication date: 20210625 |